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Question

A simple pendulum hanging from the ceiling of a stationary lift has a time period T1. When the lift moves downward with constant velocity, the time period is T2, then

A

T2 is infinity

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B

T2> T1

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C

T2< T1

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D

T2 = T1

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Solution

The correct option is D

T2 = T1


As the lift moves down with constant velocity, the effective acceleration due to gravity remains the same i.e., g so the time period remains the same!

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