In a stationary lift, time period of a simple pendulum is ' T '.' The lift starts accelerating downwards with acceleration ( 4 g ) , then the time period of the pendulum will be

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In a stationary lift, time period of a simple pendulum is ' T '.' The lift starts accelerating downwards with acceleration ( 4 g ​ ) , then the time period of the pendulum will be

TestHub · Accepted Answer

Time period of pendulum: T = 2 π g L ​ ​ ∴ When lift is accelerated downward with acceleration 4 g ​ , ​ g = g − 4 g ​ g = 4 3 g ​ ​ ∴ New Time period will be ​ T 1 ​ = 2 π 3 g 4 L ​ ​ T 1 ​ = 2 π 3 ​ 2 ​ g L ​ ​ T 1 ​ = 3 ​ 2 ​ T ​

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