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Oscillations

Question
CBSEENPH11020459

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

  • first increase and then decrease to the original value.

  • first decreased then increase to the original value.

  • remain unchanged.

  • increase towards a saturation value.

Solution

A.

first increase and then decrease to the original value.

First CM goes down and then comes to its initial position.