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The length of a seconds pendulum is
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Correct option is B
T=2πl/g⇒l=gT24π2=9.8×44×π2=99 cmSimilar 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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