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A simple pendulum has a pariod T inside ...

A simple pendulum has a pariod T inside a lift when it is stationary. The lift is accelerated upwards with constant acceleration 'a'. The period :

A

decreases

B

increases

C

remains same

D

sometimes increases and sometimes decreases.

Text Solution

Verified by Experts

The correct Answer is:
A
When the lift ascends with acceleration a then apparent value of acceleration due to gravity becomes `(g+a)`
As `T=2pi sqrt((l)/(g))`.
So the time period decreases.
Hence correct choice is (a).
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