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 simple pendulum has a pariod T inside a lift when it is stationary.

1.	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 :
Answer» DECREASES increases remains same SOMETIMES increases and sometimes decreases. Solution :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 choiceis (a).

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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 :

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