Physics, 28.05.2021 14:00 fordd4

A simple pendulum is hollow from within and its time period is T. how is the time period of pendulum affected when: a) ¼ of Bob is filled with mercury
b)¾ of Bob is filled with Mercury
c) the bob is completely filled with Mercury

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A simple pendulum is hollow from within and its time period is T. how is the time period of pendulum...