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Pendulum in Non Inertial Frame

The time peri...

Question

The time period of the simple pendulum kept in a lift decreases when the lift is .

A

going up

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B

going down

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C

stationary

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Solution

The correct option is A going up
The square of the time period of a simple pendulum is directly proportional to its length and inversely proportional to effective acceleration due to gravity. While going up in a lift the effective acceleration due to gravity increases, which decrease the time period.

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