Physics

A swing is 2m long. how often do you need to push it to increase its swing's amplitude the most?

L=2m
When amplitude is the most KE=0 and PE is at its maximum. But i'm not completely sure how to solve this problem.

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asked by Andrea
  1. I am sure you have pushed a swing.
    You push it once a period.
    In other words every T seconds.
    T = 2 pi sqrt(L/g)
    = 2 pi sqrt (2/9.8)

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    posted by Damon

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