the Bob of a pendulum is hollow and has a pinhole at bottom. it is filled with water and allowed to oscillate? how does its time period varies with time ?
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centre of mass will be back at the geometrical centre (which was its original position when it was full of water), As soon as all the water has leaked out, however, the L will decrease and so willthe time period.The bob of a simple pendulum is a hollow sphere filled with water.
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