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A body is executing simple harmonic moti...

A body is executing simple harmonic motion with an angular frequency s rad/2 . The velocity of the body at 20 mm displacement, when the amplitude of motion is 60 mm , is

A

131 c

B

118 `mms^(-1)`

C

113 `mms^(-1)`

D

90 `mms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`v=omegasqrt(A^(2)-x^(2))=2sqrt((60)^(2)-(20)^(2))`=113 `mms^(-1)`
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