JEE Main 2005 Physics question
The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hole near the bottom of the oscillation bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillation would
Answer: (1)
Solution
The effective length is up to the centre of mass of bob + water. As water drains from the bottom, the centre of mass first moves down (effective length and
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