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Question
A simple pendulum is made of a body which is a hollow sphere containing mercury, suspended by means of a wire. If a little mercury is drained off, then the time period of pendulum
A simple pendulum is made of a body which is a hollow sphere containing mercury, suspended by means of a wire. If a little mercury is drained off, then the time period of pendulum
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Solution
The correct option is B Increase
When the mercury inside the hollow sphere is drained off, the position of centre of mass of (ball+mercury) falls (with respect to fixed end) such that, the effective length of pendulum increases hence T increases.
When the mercury inside the hollow sphere is drained off, the position of centre of mass of (ball+mercury) falls (with respect to fixed end) such that, the effective length of pendulum increases hence T increases.
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