10_1425_web_Lec_28_SimpleHarmonicMotion

10_1425_web_Lec_28_SimpleHarmonicMotion - Simple Harmonic...

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Simple Harmonic Motion Physics 1425 Lecture 28 Michael Fowler, UVa
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Force of a Stretched Spring If a spring is pulled to extend beyond its natural length by a distance x , it will pull back with a force where k is called the spring constant ”. The same linear force is also generated when the spring is compressed . A Natural length F kx = − Extension x F kx = − Spring’s force
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