Q.

The amplitude of an oscillating simple pendulum is 10cm and its period is 4 sec. Its speed after 1 sec after it passes its equilibrium position, is

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a

Zero

b

0.57m/s

c

0.212m/s

d

0.32m/s

answer is A.

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Detailed Solution

At the time t=T4=44=1sec after passing from mean position, the body reaches at it's extreme position. At extreme position, velocity of body becomes zero.
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