Questions
The acceleration due to gravity on moon is of that on the earth. If the length of the seconds pendulum is 60 cm on the earth, what is its length on the moon?
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Correct option is A
Given acceleration due to gravity , gmoon=gm=16gearth=ge6 ⇒gm=ge6And length of pendulum on earth is, learth=le=60 cmsto find the lmoon=lmFor seconds pendulum time period is 2 seconds.T=2πlg for simple pendulum Time remains constant for seconds pendulum in both the planets.lg=constant.lmle=gmgelm=le×gmge= 60×ge6ge=606=10 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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