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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Slinky</span></h1>
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<p><b>Slinky</b> (<span style="font-style:normal;font-weight:normal"><a href="Englische_Sprache" title="Englische Sprache">englisch</a></span> <span lang="en-Latn" style="font-style:italic">slinky</span>: <i>geschmeidig</i>), als Handelsname häufig auch <b>Treppenläufer</b><sup id="cite_ref-:1_1-0" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> oder <i>Hyperspring</i>, erfunden um 1945 von Richard James, einem Ingenieur in <a href="Philadelphia" title="Philadelphia">Philadelphia</a>. Das Slinky ist eine <a href="Feder_(Technik)#Schraubenfeder" title="Feder (Technik)">Schraubenfeder</a> aus Metall oder Kunststoff. Als <a href="Spielzeug" title="Spielzeug">Spielzeug</a> animiert es zu verschiedenen Spielen. So kann ein Slinky zum Beispiel seinen freien Fall scheinbar verzögern oder eine <a href="Treppe" title="Treppe">Treppe</a> hinuntersteigen.<sup id="cite_ref-:1_1-1" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-rj_2-0" class="reference"><a href="#cite_note-rj-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p>

<div class="mw-heading mw-heading2"><h2 id="Treppenlauf">Treppenlauf</h2></div>
<p>Wird das Slinky auf einer Treppe in Bewegung gesetzt, überträgt es die Energie entlang seiner Achse in einer <a href="Longitudinalwelle" title="Longitudinalwelle">Longitudinalwelle</a>. Die Schraubenfeder bewegt sich in einer periodischen Bewegung, als würde sie einen <a href="Purzelbaum" class="mw-redirect" title="Purzelbaum">Purzelbaum</a> schlagen.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Geschichte">Geschichte</h2></div>
<p>Im Jahr 1943 arbeitete Richard James bei <a href="Philadelphia" title="Philadelphia">Philadelphia</a> in seinem Heimatlabor an der Entwicklung von Federn, mit denen empfindliche Instrumente an Bord von Schiffen gehalten und selbst in rauer See stabilisiert werden konnten. Als er einmal versehentlich eine seiner Federn umstieß, entdeckte James den Treppengang.<sup id="cite_ref-rj_2-1" class="reference"><a href="#cite_note-rj-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p><p>Nach wiederholten Experimenten erkannten er und seine Frau Betty das Potenzial als Spielzeug; sie taufte es auf den Namen <i>Slinky</i>. Im Jahr 1945 stellten die beiden ihr erstes Spielzeug im <i>Gimbels Department Store</i> in der Innenstadt von Philadelphia aus und verkauften 400 Slinkys in 90 Minuten.<sup id="cite_ref-rj_2-2" class="reference"><a href="#cite_note-rj-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p><p>Die James gründeten die <i>James Industries</i> in <a href="Hollidaysburg" title="Hollidaysburg">Hollidaysburg</a>, <a href="Pennsylvania" title="Pennsylvania">Pennsylvania</a>, um ihr Produkt zu vermarkten. Richard James erfand Maschinen, die in 10 Sekunden 80&nbsp;Fuß (rund 24&nbsp;m) Stahldraht zu einem Slinky wickeln konnten. Bis zum 50. Geburtstag im Jahr 1995 hatte das Unternehmen mit denselben Maschinen weltweit über eine Viertelmilliarde Slinkys verkauft.<sup id="cite_ref-rj_2-3" class="reference"><a href="#cite_note-rj-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Rezeption_in_der_Kultur">Rezeption in der Kultur</h2></div>
<p>Im <a href="Pixar" title="Pixar">Pixar</a>-Film <i><a href="Toy_Story" title="Toy Story">Toy Story</a></i> machte der Spielzeughund <i>Slink</i> oder <i>Slinkydog</i> Karriere.
</p><p><a href="Sebastian_Kr%C3%A4mer" title="Sebastian Krämer">Sebastian Krämer</a> hat dem Slinky das Lied <i>Ding, das die Treppe runtergehen kann</i> gewidmet.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Slinky_in_der_Mode"><i>Slinky</i> in der Mode</h3></div>
<p>Der Begriff <i>Slinky</i> wird in der <a href="Mode" title="Mode">Mode</a> auch für leicht fallende, weiche Bekleidung verwendet. So gibt es Slinky-Hosen, -Röcke, -Kleider, -Jacken, -<a href="T-Shirt" title="T-Shirt">T-Shirts</a>, -<a href="Top_(Oberteil)" title="Top (Oberteil)">Tops</a> und mehr. Alle haben gemeinsam, dass sie gerade geschnitten sind und aus weichen, elastischen <a href="Jersey_(Stoff)" title="Jersey (Stoff)">Jerseystoffen</a> hergestellt werden, nicht eng am Körper anliegen und, der Schwerkraft folgend, fallen.
</p>
<div class="mw-heading mw-heading2"><h2 id="Physikalische_Eigenschaften">Physikalische Eigenschaften</h2></div>

<div class="mw-heading mw-heading3"><h3 id="Länge_des_hängenden_Slinkys"><span id="L.C3.A4nge_des_h.C3.A4ngenden_Slinkys"></span>Länge des hängenden Slinkys</h3></div>
<p>Durch die im Allgemeinen konstant geringe <a href="Federkonstante" title="Federkonstante">Federkonstante</a> kann ein Slinky über weite Bereiche als <a href="Hookesches_Gesetz#Hookesches_Gesetz_für_Federsysteme" title="Hookesches Gesetz">hookesche Feder</a> modelliert werden. Unter dieser Annahme kann die Federkonstante beispielsweise mit
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L_{\text{ges}}=L_{0}+{\frac {Mg}{2k}}\qquad L_{m}=L_{m0}+{\frac {mg}{2k_{m}}}={\frac {L_{0}}{M}}m+{\frac {g}{2Mk}}m^{2}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
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<msub>
<mi>L</mi>
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<mtext>ges</mtext>
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<mo>=</mo>
<msub>
<mi>L</mi>
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<mspace width="2em"></mspace>
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<mi>L</mi>
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<mo>+</mo>
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<mn>0</mn>
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<mfrac>
<mi>g</mi>
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<mi>M</mi>
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<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
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<annotation encoding="application/x-tex">{\displaystyle L_{\text{ges}}=L_{0}+{\frac {Mg}{2k}}\qquad L_{m}=L_{m0}+{\frac {mg}{2k_{m}}}={\frac {L_{0}}{M}}m+{\frac {g}{2Mk}}m^{2}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/6953e97375f87f9268c3e1bef1ce515d65daa098.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:59.991ex; height:5.843ex;" alt="{\displaystyle L_{\text{ges}}=L_{0}+{\frac {Mg}{2k}}\qquad L_{m}=L_{m0}+{\frac {mg}{2k_{m}}}={\frac {L_{0}}{M}}m+{\frac {g}{2Mk}}m^{2}}" loading="lazy"></span></dd></dl>
<p>via einer Regression über die Längen des frei hängenden Slinkyteiles mit Masse <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle m}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>m</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle m}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/0a07d98bb302f3856cbabc47b2b9016692e3f7bc.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.04ex; height:1.676ex;" alt="{\displaystyle m}" loading="lazy"></span> berechnet werden.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_7-0" class="reference"><a href="#cite_note-:0-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Die Größen <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L_{0},L_{\text{ges}},L_{m0}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>0</mn>
</mrow>
</msub>
<mo>,</mo>
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mtext>ges</mtext>
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</msub>
<mo>,</mo>
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>m</mi>
<mn>0</mn>
</mrow>
</msub>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L_{0},L_{\text{ges}},L_{m0}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/eb9c5ea435f8f064daa0bca704b016f6a751cb64.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:12.8ex; height:2.843ex;" alt="{\displaystyle L_{0},L_{\text{ges}},L_{m0}}" loading="lazy"></span> und <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L_{m}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>m</mi>
</mrow>
</msub>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L_{m}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/205db57bad21096ab2f4d40d5d045fccc2bd07a0.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:3.258ex; height:2.509ex;" alt="{\displaystyle L_{m}}" loading="lazy"></span> beschreiben dabei die Ruhe- und Gesamtlänge des hängenden Slinkys und die Ruhe- und hängende Länge des Slinkyteiles mit Masse <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle m}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>m</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle m}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/0a07d98bb302f3856cbabc47b2b9016692e3f7bc.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.04ex; height:1.676ex;" alt="{\displaystyle m}" loading="lazy"></span>. <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle M}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>M</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle M}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/f82cade9898ced02fdd08712e5f0c0151758a0dd.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.442ex; height:2.176ex;" alt="{\displaystyle M}" loading="lazy"></span> ist die Slinky-Gesamtmasse, <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle k}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>k</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle k}</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/c3c9a2c7b599b37105512c5d570edc034056dd40.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.211ex; height:2.176ex;" alt="{\displaystyle k}" loading="lazy"></span> sowie <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle k_{m}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>k</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>m</mi>
</mrow>
</msub>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle k_{m}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/25d16171af1c8efc54dfb43a8c83893cf7516f01.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.886ex; height:2.509ex;" alt="{\displaystyle k_{m}}" loading="lazy"></span> die Federkonstante des gesamten Slinkys und des Slinkyteiles mit Masse <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle m}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>m</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle m}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/0a07d98bb302f3856cbabc47b2b9016692e3f7bc.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.04ex; height:1.676ex;" alt="{\displaystyle m}" loading="lazy"></span> und <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle g}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>g</mi>
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<annotation encoding="application/x-tex">{\displaystyle g}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/d3556280e66fe2c0d0140df20935a6f057381d77.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.116ex; height:2.009ex;" alt="{\displaystyle g}" loading="lazy"></span> die <a href="Schwerebeschleunigung" class="mw-redirect" title="Schwerebeschleunigung">Schwerebeschleunigung</a>.
</p><p>Es ist darauf zu achten, dass die Federkonstante eines Slinkystückes umgekehrt proportional zur Länge des Stückes skaliert (<span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle k_{m}=Mk/m}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>k</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>m</mi>
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</msub>
<mo>=</mo>
<mi>M</mi>
<mi>k</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo>/</mo>
</mrow>
<mi>m</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle k_{m}=Mk/m}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/c693da5e69c4561fec65aea7926cc573e7fc5f14.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.841ex; height:2.843ex;" alt="{\displaystyle k_{m}=Mk/m}" loading="lazy"></span>).
</p>
<div class="mw-heading mw-heading3"><h3 id="Schwingfrequenz">Schwingfrequenz</h3></div>
<div class="mw-heading mw-heading4"><h4 id="Transversalschwingung">Transversalschwingung</h4></div>
<p>Wird ein Slinky so weit auseinandergezogen, dass die Slinkybreite und der Anteil der Ruhelänge an der gestreckten Länge vernachlässigbar wird <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle (L\gg L_{0})}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mo stretchy="false">(</mo>
<mi>L</mi>
<mo>≫<!-- ≫ --></mo>
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>0</mn>
</mrow>
</msub>
<mo stretchy="false">)</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle (L\gg L_{0})}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/e4cc35d7c854d491bfba5305347ec20b84124cc8.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:9.643ex; height:2.843ex;" alt="{\displaystyle (L\gg L_{0})}" loading="lazy"></span>, dann wird die transversale Schwingfrequenz <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span> für geringe Auslenkungen konstant und unabhängig von der genauen Auslenkung und Streckungslänge.<sup id="cite_ref-:0_7-1" class="reference"><a href="#cite_note-:0-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p><p>Die Mersenneschen Gesetze<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> gelten auch für Slinkys, welche obige Anforderungen erfüllen.<sup id="cite_ref-:0_7-2" class="reference"><a href="#cite_note-:0-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Sie beschreiben die Abhängigkeiten der Schwingfrequenz von der Saitenlänge <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>L</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/103168b86f781fe6e9a4a87b8ea1cebe0ad4ede8.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.583ex; height:2.176ex;" alt="{\displaystyle L}" loading="lazy"></span>, der <a href="Seilstatik" title="Seilstatik">Spannkraft</a> <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle F}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>F</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle F}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/545fd099af8541605f7ee55f08225526be88ce57.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.741ex; height:2.176ex;" alt="{\displaystyle F}" loading="lazy"></span> und der Linien<a href="Dichte" title="Dichte">dichte</a> <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mu }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>μ<!-- μ --></mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle \mu }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/9fd47b2a39f7a7856952afec1f1db72c67af6161.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:1.402ex; height:2.176ex;" alt="{\displaystyle \mu }" loading="lazy"></span>.
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f\propto {\frac {1}{\sqrt {\mu }}}\quad {\text{für}}~~F,L={\text{const.}}\qquad f\propto {\sqrt {F}}\quad {\text{für}}~~L,\mu ={\text{const.}}\qquad f\propto {\frac {1}{\sqrt {\mu }}}\quad {\text{für}}~~F,L={\text{const.}}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
<mo>∝<!-- ∝ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mn>1</mn>
<msqrt>
<mi>μ<!-- μ --></mi>
</msqrt>
</mfrac>
</mrow>
<mspace width="1em"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mtext>für</mtext>
</mrow>
<mtext>&nbsp;</mtext>
<mtext>&nbsp;</mtext>
<mi>F</mi>
<mo>,</mo>
<mi>L</mi>
<mo>=</mo>
<mrow class="MJX-TeXAtom-ORD">
<mtext>const.</mtext>
</mrow>
<mspace width="2em"></mspace>
<mi>f</mi>
<mo>∝<!-- ∝ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mi>F</mi>
</msqrt>
</mrow>
<mspace width="1em"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mtext>für</mtext>
</mrow>
<mtext>&nbsp;</mtext>
<mtext>&nbsp;</mtext>
<mi>L</mi>
<mo>,</mo>
<mi>μ<!-- μ --></mi>
<mo>=</mo>
<mrow class="MJX-TeXAtom-ORD">
<mtext>const.</mtext>
</mrow>
<mspace width="2em"></mspace>
<mi>f</mi>
<mo>∝<!-- ∝ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mn>1</mn>
<msqrt>
<mi>μ<!-- μ --></mi>
</msqrt>
</mfrac>
</mrow>
<mspace width="1em"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mtext>für</mtext>
</mrow>
<mtext>&nbsp;</mtext>
<mtext>&nbsp;</mtext>
<mi>F</mi>
<mo>,</mo>
<mi>L</mi>
<mo>=</mo>
<mrow class="MJX-TeXAtom-ORD">
<mtext>const.</mtext>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f\propto {\frac {1}{\sqrt {\mu }}}\quad {\text{für}}~~F,L={\text{const.}}\qquad f\propto {\sqrt {F}}\quad {\text{für}}~~L,\mu ={\text{const.}}\qquad f\propto {\frac {1}{\sqrt {\mu }}}\quad {\text{für}}~~F,L={\text{const.}}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/44e3e430237b257594aeecbd87069081c443e99d.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.838ex; width:93.912ex; height:6.176ex;" alt="{\displaystyle f\propto {\frac {1}{\sqrt {\mu }}}\quad {\text{für}}~~F,L={\text{const.}}\qquad f\propto {\sqrt {F}}\quad {\text{für}}~~L,\mu ={\text{const.}}\qquad f\propto {\frac {1}{\sqrt {\mu }}}\quad {\text{für}}~~F,L={\text{const.}}}" loading="lazy"></span></dd></dl>
<p>Die Gesamtmasse <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle M=L\mu }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>M</mi>
<mo>=</mo>
<mi>L</mi>
<mi>μ<!-- μ --></mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle M=L\mu }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/c169dc8352f9cae62900d3cca6fa011d8cd5d6aa.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:8.525ex; height:2.676ex;" alt="{\displaystyle M=L\mu }" loading="lazy"></span> des Slinkys bleibt unabhängig von der Streckung konstant, während die <a href="R%C3%BCckstellkraft" title="Rückstellkraft">Rückstellkraft</a> proportional zur Streckung der Feder anwächst: <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle F=k(L-L_{0})\approx kL}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>F</mi>
<mo>=</mo>
<mi>k</mi>
<mo stretchy="false">(</mo>
<mi>L</mi>
<mo>−<!-- − --></mo>
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>0</mn>
</mrow>
</msub>
<mo stretchy="false">)</mo>
<mo>≈<!-- ≈ --></mo>
<mi>k</mi>
<mi>L</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle F=k(L-L_{0})\approx kL}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/59769627ab2da8dfb244f8ff011ddacee03f3a8f.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.813ex; height:2.843ex;" alt="{\displaystyle F=k(L-L_{0})\approx kL}" loading="lazy"></span>. Der Ausdruck für <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span> vereinfacht sich also zu
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f\propto {\frac {1}{L}}{\sqrt {\frac {F}{\mu }}}={\sqrt {\frac {k(L-L_{0})L}{ML^{2}}}}\approx {\sqrt {\frac {k}{M}}}\qquad {\text{genauer: }}f\approx {\frac {n}{2}}{\sqrt {\frac {k}{M}}}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
<mo>∝<!-- ∝ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mn>1</mn>
<mi>L</mi>
</mfrac>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mi>F</mi>
<mi>μ<!-- μ --></mi>
</mfrac>
</msqrt>
</mrow>
<mo>=</mo>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mrow>
<mi>k</mi>
<mo stretchy="false">(</mo>
<mi>L</mi>
<mo>−<!-- − --></mo>
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>0</mn>
</mrow>
</msub>
<mo stretchy="false">)</mo>
<mi>L</mi>
</mrow>
<mrow>
<mi>M</mi>
<msup>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
</mrow>
</msup>
</mrow>
</mfrac>
</msqrt>
</mrow>
<mo>≈<!-- ≈ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mi>k</mi>
<mi>M</mi>
</mfrac>
</msqrt>
</mrow>
<mspace width="2em"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mtext>genauer:&nbsp;</mtext>
</mrow>
<mi>f</mi>
<mo>≈<!-- ≈ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mi>n</mi>
<mn>2</mn>
</mfrac>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mi>k</mi>
<mi>M</mi>
</mfrac>
</msqrt>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f\propto {\frac {1}{L}}{\sqrt {\frac {F}{\mu }}}={\sqrt {\frac {k(L-L_{0})L}{ML^{2}}}}\approx {\sqrt {\frac {k}{M}}}\qquad {\text{genauer: }}f\approx {\frac {n}{2}}{\sqrt {\frac {k}{M}}}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/9b6210dbf924b99ba10d18d5b405e6581f9e7460.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.338ex; width:64.288ex; height:8.009ex;" alt="{\displaystyle f\propto {\frac {1}{L}}{\sqrt {\frac {F}{\mu }}}={\sqrt {\frac {k(L-L_{0})L}{ML^{2}}}}\approx {\sqrt {\frac {k}{M}}}\qquad {\text{genauer: }}f\approx {\frac {n}{2}}{\sqrt {\frac {k}{M}}}}" loading="lazy"></span></dd></dl>
<p>mit der <a href="Raummode#Berechnung" title="Raummode">Modenordnung</a> <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>n</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle n}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/a601995d55609f2d9f5e233e36fbe9ea26011b3b.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.395ex; height:1.676ex;" alt="{\displaystyle n}" loading="lazy"></span>. Die Frequenz ist demnach unabhängig von der Länge des Slinkys und damit eine Körpergröße.
</p>
<div class="mw-heading mw-heading4"><h4 id="Longitudinalschwingung">Longitudinalschwingung</h4></div>
<p>Die Schwingung eines senkrecht aufgehängten Slinkys hat die Periodendauer
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle T={\sqrt {\frac {32L}{g}}}\,,}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>T</mi>
<mo>=</mo>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mrow>
<mn>32</mn>
<mi>L</mi>
</mrow>
<mi>g</mi>
</mfrac>
</msqrt>
</mrow>
<mspace width="thinmathspace"></mspace>
<mo>,</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle T={\sqrt {\frac {32L}{g}}}\,,}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/13833178ca0112993da69d51fbfa5d3b0dd00c1d.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.171ex; width:12.836ex; height:7.509ex;" alt="{\displaystyle T={\sqrt {\frac {32L}{g}}}\,,}" loading="lazy"></span></dd></dl>
<p>wobei <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>L</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/103168b86f781fe6e9a4a87b8ea1cebe0ad4ede8.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.583ex; height:2.176ex;" alt="{\displaystyle L}" loading="lazy"></span> die Länge des Slinkys unter Einfluss der Gravitation und <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle g=9{,}81\,{\text{ms}}^{-2}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>g</mi>
<mo>=</mo>
<mn>9</mn>
<mrow class="MJX-TeXAtom-ORD">
<mo>,</mo>
</mrow>
<mn>81</mn>
<mspace width="thinmathspace"></mspace>
<msup>
<mrow class="MJX-TeXAtom-ORD">
<mtext>ms</mtext>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<mo>−<!-- − --></mo>
<mn>2</mn>
</mrow>
</msup>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle g=9{,}81\,{\text{ms}}^{-2}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/04a04efbf92e9cf61c6f679d4e53fdac9302fe12.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:13.921ex; height:3.009ex;" alt="{\displaystyle g=9{,}81\,{\text{ms}}^{-2}}" loading="lazy"></span> die Schwerebeschleunigung an der Erdoberfläche ist. Im Ausdruck für die Periodendauer <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle T}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>T</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle T}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/ec7200acd984a1d3a3d7dc455e262fbe54f7f6e0.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.636ex; height:2.176ex;" alt="{\displaystyle T}" loading="lazy"></span> tauchen weder Federkonstante <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle k}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>k</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle k}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/c3c9a2c7b599b37105512c5d570edc034056dd40.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.211ex; height:2.176ex;" alt="{\displaystyle k}" loading="lazy"></span> noch die Masse <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle M}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>M</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle M}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/f82cade9898ced02fdd08712e5f0c0151758a0dd.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.442ex; height:2.176ex;" alt="{\displaystyle M}" loading="lazy"></span> des Slinkys auf, wie man es bei einem Federpendel erwarten würde. Dies liegt daran, dass diese Abhängigkeit in der Länge <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>L</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/103168b86f781fe6e9a4a87b8ea1cebe0ad4ede8.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.583ex; height:2.176ex;" alt="{\displaystyle L}" loading="lazy"></span> versteckt ist, die von diesen beiden Parametern abhängt:
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L(M,k)={\frac {Mg}{2k}}\,.}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>L</mi>
<mo stretchy="false">(</mo>
<mi>M</mi>
<mo>,</mo>
<mi>k</mi>
<mo stretchy="false">)</mo>
<mo>=</mo>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mrow>
<mi>M</mi>
<mi>g</mi>
</mrow>
<mrow>
<mn>2</mn>
<mi>k</mi>
</mrow>
</mfrac>
</mrow>
<mspace width="thinmathspace"></mspace>
<mo>.</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L(M,k)={\frac {Mg}{2k}}\,.}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/41160e72de5d89cf01c9ced94f6fff7a1c0ed187.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:16.606ex; height:5.509ex;" alt="{\displaystyle L(M,k)={\frac {Mg}{2k}}\,.}" loading="lazy"></span></dd></dl>
<p>Die Länge <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L_{0}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>L</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>0</mn>
</mrow>
</msub>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle L_{0}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/db742b8c210fc611329a4c2dcc3af4b4e1a110cb.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.637ex; height:2.509ex;" alt="{\displaystyle L_{0}}" loading="lazy"></span> des Slinkys im nicht ausgelenkten Zustand wurde hier vernachlässigt. Jetzt kann man auch schreiben
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle T=4{\sqrt {\frac {M}{k}}}\,.}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>T</mi>
<mo>=</mo>
<mn>4</mn>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mi>M</mi>
<mi>k</mi>
</mfrac>
</msqrt>
</mrow>
<mspace width="thinmathspace"></mspace>
<mo>.</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle T=4{\sqrt {\frac {M}{k}}}\,.}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/fe582383585a1b3e93eeab1dee113a8edf693c2e.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:12.533ex; height:6.176ex;" alt="{\displaystyle T=4{\sqrt {\frac {M}{k}}}\,.}" loading="lazy"></span></dd></dl>
<p>Dieser Ausdruck weicht von dem des Federpendels
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle T_{\text{Federpendel}}=2\pi {\sqrt {\frac {M}{k}}}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>T</mi>
<mrow class="MJX-TeXAtom-ORD">
<mtext>Federpendel</mtext>
</mrow>
</msub>
<mo>=</mo>
<mn>2</mn>
<mi>π<!-- π --></mi>
<mrow class="MJX-TeXAtom-ORD">
<msqrt>
<mfrac>
<mi>M</mi>
<mi>k</mi>
</mfrac>
</msqrt>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle T_{\text{Federpendel}}=2\pi {\sqrt {\frac {M}{k}}}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/011e2648fe4d4a8226eb13ecbc13c7a588d6e7c3.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:21.536ex; height:6.176ex;" alt="{\displaystyle T_{\text{Federpendel}}=2\pi {\sqrt {\frac {M}{k}}}}" loading="lazy"></span></dd></dl>
<p>ab, da beim Federpendel die Feder als masselos angesehen wird und die Masse <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle M}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>M</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle M}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/f82cade9898ced02fdd08712e5f0c0151758a0dd.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.442ex; height:2.176ex;" alt="{\displaystyle M}" loading="lazy"></span> hier die an der Feder hängende Masse bedeutet.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<div class="sisterproject" style="margin:0.1em 0 0 0;"><div class="noresize noviewer" style="display:inline-block; line-height:10px; min-width:1.6em; text-align:center;" aria-hidden="true" role="presentation"><span class="mw-default-size" typeof="mw:File"><span title="Commons"></span></span></div><b><span class=""><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Slinky?uselang=de"><span lang="en">Commons</span>: Slinky</a></span></b>&nbsp;– Sammlung von Bildern, Videos und Audiodateien</div>
<ul><li><a rel="nofollow" class="external text" href="http://www.wired.com/wiredscience/2011/09/modeling-a-falling-slinky/">Modeling a Falling Slinky</a> auf <a href="Wired" title="Wired">Wired.com</a> (englisch)</li>
<li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=SyKb79_KNiw">Video von einem Slinky, das eine gebogene Treppe hinuntersteigt</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-:1-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-:1_1-0">a</a></sup> <sup><a href="#cite_ref-:1_1-1">b</a></sup></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://www.rhetos.de/html/lex/slinky.htm"><i>Slinky - Rhetos Lernlexikon.</i></a> In: <i>rhetos.de.</i><span class="Abrufdatum"> Abgerufen am 24.&nbsp;Oktober 2021</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3ASlinky&amp;rft.title=Slinky+-+Rhetos+Lernlexikon&amp;rft.description=Slinky+-+Rhetos+Lernlexikon&amp;rft.identifier=https%3A%2F%2Fwww.rhetos.de%2Fhtml%2Flex%2Fslinky.htm&amp;rft.language=de">&nbsp;</span></span>
</li>
<li id="cite_note-rj-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-rj_2-0">a</a></sup> <sup><a href="#cite_ref-rj_2-1">b</a></sup> <sup><a href="#cite_ref-rj_2-2">c</a></sup> <sup><a href="#cite_ref-rj_2-3">d</a></sup></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://lemelson.mit.edu/resources/richard-james"><i>The Slinky® (Inventor of the week archive).</i></a> <a href="Massachusetts_Institute_of_Technology" title="Massachusetts Institute of Technology">Massachusetts Institute of Technology</a>,<span class="Abrufdatum"> abgerufen am 28.&nbsp;Dezember 2012</span> (englisch).</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3ASlinky&amp;rft.title=The+Slinky%C2%AE+%28Inventor+of+the+week+archive%29&amp;rft.description=The+Slinky%C2%AE+%28Inventor+of+the+week+archive%29&amp;rft.identifier=https%3A%2F%2Flemelson.mit.edu%2Fresources%2Frichard-james&amp;rft.publisher=%5B%5BMassachusetts+Institute+of+Technology%5D%5D&amp;rft.language=en">&nbsp;</span></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Ben Ikenson: <i>Patents: Bubblewrap, Bottlecaps, Barbed Wire, and Other Ingenious Inventions: 150 Ingenious Inventions.</i> Black Dog &amp; Leventhal 2004, ISBN 978-1-57912-367-3.</span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://webarchive.loc.gov/all/20081106234714/http%3A//inventors.about.com/od/sstartinventions/a/slinky.htm">webarchive.loc.gov: History of the Slinky Toy</a></span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">
<style data-mw-deduplicate="TemplateStyles:r261891140">
/* start https://de.wikipedia.org/ */


.mw-parser-output .webarchiv-memento a{color:inherit}


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</style><a rel="nofollow" class="external text" href="https://web.archive.org/web/20170302030402/http://sebastiankraemer.de/produkt/akademie-der-sehnsucht-2"><i>Sebastian Krämer - Akademie der Sehnsucht Trackliste</i></a> (<span class="webarchiv-memento"><a href="Webarchivierung#Begrifflichkeiten" title="Webarchivierung">Memento</a></span> vom 2. März 2017 im <i><a href="Internet_Archive" title="Internet Archive">Internet Archive</a></i>)</span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><span class="cite">Amir Eskandari: <a rel="nofollow" class="external text" href="https://arxiv.org/pdf/1801.04419.pdf"><i>Some Static Properties of Slinky.</i></a> (PDF) 1.&nbsp;Oktober 2018,<span class="Abrufdatum"> abgerufen am 14.&nbsp;Juli 2021</span> (englisch).</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3ASlinky&amp;rft.title=Some+Static+Properties+of+Slinky&amp;rft.description=Some+Static+Properties+of+Slinky&amp;rft.identifier=https%3A%2F%2Farxiv.org%2Fpdf%2F1801.04419.pdf&amp;rft.creator=Amir+Eskandari&amp;rft.date=2018-10-01&amp;rft.language=en">&nbsp;</span></span>
</li>
<li id="cite_note-:0-7"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-:0_7-0">a</a></sup> <sup><a href="#cite_ref-:0_7-1">b</a></sup> <sup><a href="#cite_ref-:0_7-2">c</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20210714093024/https://tgf.pw/~philip/Slinky/"><i>Schwingendes Gummiband / Feder - Hängende Feder</i></a> (<span class="webarchiv-memento"><a href="Webarchivierung#Begrifflichkeiten" title="Webarchivierung">Memento</a></span> vom 14. Juli 2021 im <i><a href="Internet_Archive" title="Internet Archive">Internet Archive</a></i>)</span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://www.spektrum.de/lexikon/physik/saitenschwingungen/12681"><i>Saitenschwingungen.</i></a> <a href="Spektrum.de" title="Spektrum.de">Spektrum.de</a>,<span class="Abrufdatum"> abgerufen am 14.&nbsp;Juli 2021</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3ASlinky&amp;rft.title=Saitenschwingungen&amp;rft.description=Saitenschwingungen&amp;rft.identifier=https%3A%2F%2Fwww.spektrum.de%2Flexikon%2Fphysik%2Fsaitenschwingungen%2F12681&amp;rft.publisher=%5B%5BSpektrum.de%5D%5D&amp;rft.language=de">&nbsp;</span></span>
</li>
<li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text">Jörg Pretz: <cite style="font-style:italic">Oscillations of a suspended slinky</cite>. In: <cite style="font-style:italic">European Journal of Physics</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>42</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em">&nbsp;</span>4</span>, 1.&nbsp;Juli 2021, <a href="Internationale_Standardnummer_f%C3%BCr_fortlaufende_Sammelwerke" title="Internationale Standardnummer für fortlaufende Sammelwerke">ISSN</a>&nbsp;<span style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://zdb-katalog.de/list.xhtml?t=iss%3D%220143-0807%22&amp;key=cql">0143-0807</a></span>, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>045008</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1088/1361-6404%2Fabcddf">10.1088/1361-6404/abcddf</a></span> (<a rel="nofollow" class="external text" href="https://iopscience.iop.org/article/10.1088/1361-6404/abcddf">iop.org</a> [abgerufen am 29.&nbsp;April 2023]).<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rfr_id=info:sid/de.wikipedia.org:Slinky&amp;rft.atitle=Oscillations+of+a+suspended+slinky&amp;rft.au=J%C3%B6rg+Pretz&amp;rft.date=2021-07-01&amp;rft.doi=10.1088%2F1361-6404%2Fabcddf&amp;rft.genre=journal&amp;rft.issn=0143-0807&amp;rft.issue=4&amp;rft.jtitle=European+Journal+of+Physics&amp;rft.pages=045008&amp;rft.volume=42" style="display:none">&nbsp;</span></span>
</li>
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