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A simple pendulum, consisting of a string (of negligible mass) of length L with a small...

A simple pendulum, consisting of a string (of negligible mass) of length L with a small mass m at the end, is initially held horizontal (theta = 90) and then released.

a) what is the maximum velocity that the mass attains after release?

b) at what angle theta, is the power delivered to the ball by gravity a maximum as the pendulum swings down? take theta = 0 when the pendulum is vertical.

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