Posted by **david** on Saturday, February 16, 2013 at 7:16am.

A simple pendulum in a certain planet is found to vibrate 50 times in 100s. Find its (a) period, (b) its frequency. (c) When 1.5m of its length is cut, it vibrates 50 times in 50 s. Find the original length of the pendulum.

thanks in advance

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