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A simple pendulum oscillates with an amplitude of 30 degrees. If the length of the string is 1.0m. Calculate the velocity of the pendulum bob at its lowest point.

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2 answers
  1. Well, at 30 degrees, its height is
    L-Lcos30
    so its potential energy is mg(L-Lcos30) and that is equal to the KEnergy at the bottom...

    mgL(1-cos30)=1/2 m v^2
    so calculate velocity v

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    bobpursley
  2. 5.66

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