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The bob of a simple pendulum goes from o...

The bob of a simple pendulum goes from one extremity to another extremity in 2 s and covers a dis"tan"ce of 8 cm. If its motion is assumed to be simple harmonic, then the maximum velocity of the bob is

A

4 cm/s

B

6.28 cm/s

C

15.7 cm/s

D

12.56 cm/s

Text Solution

Verified by Experts

The correct Answer is:
B
T=4 s and A=4cm
`therefore omega =(2pi)/(T)=(2pi)/(4)=(pi)/(2)`
and Maximu velocity `=omega A=(pi)/(2)xx4=2pi=6.28 cm//s`
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