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Simple harmonic motion question help.

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    Hi,

    We recently did a test about simple harmonic motion and there's one question that I still don't understand the answer to. The question is 'explain why, when the student rises above point P, her motion is no longer simple harmonic'.

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    In simple harmonic motion the acceleration to the equilibrium is directly proportional to the displacement from the equilibrium however when the girl is above P the acceleration is constant so you can no longer call it simple harmonic motion
 
 
 
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