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lecture21

# lecture21 - Ch 10 Simple Harmonic Motion 10.1 The Spring...

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Ch. 10 Simple Harmonic Motion 10.1 The Spring Force Probably all of you have some familiarity with a spring. If you push on a spring, it pushes back. If ll i it ll b k If you pull on a spring it pulls back. And the harder you push or pull on the spring, the harder the spring pushes or pulls back. If you’re careful not to pull too hard, then you will find the following to be true: x F Applied In words, the force you apply to the spring is directly proportional to the spring’s displacement (i.e. how far it stretches or compresses). We can make this proportionality an equality by multiplying the right side by a We can make this proportionality an equality by multiplying the right side by a constant: kx F Applied = The proportionality constant, k , is called the spring constant . The proportionality constant, , is called the Units? [Force]/[Displacement] = [N/m]

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