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If the length of a pendulum is made 9 times and mass of the bob is made 4 times then the value of time period becomes
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Correct option is A
T=2πlg⇒T∝l,T2T1=l2l1=9l1l1=3 Hence if l made 9 times T becomes 3 times.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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