Questions
A man measure the period of a simple pendulum inside a stationary lift and finds it to be T seconds. If the lift accelerates upwards with an accelerating g/4, then the period of the pendulum will be
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Correct option is C
in statonary lift T=2πlg---(1) In upward motion of lift T1=2πlg+a---(2) dividing eqn(2) by eqn(1) T1T=gg+a given a=g4 T1T=gg+g4 T1T=45=25 T1=2T5 -Similar Questions
A simple pendulum is hanging from a peg inserted in a vertical wall. Its bob is stretched in horizontal position from the wall and is left free to move. The bob hits on the wall the coefficient of restitution is . After how many collisions the amplitude of vibration will become less than 60°
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