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Questions  

A body is vibrating in simple harmonic motion with an amplitude of 0.06 m and frequency of 15 Hz. The velocity and acceleration of body is 

a
5.65 m​/​s and 5.32×102m​/​s2
b
6.82 m​/​s and 7.62×102m​/​s2
c
8.91 m​/​s and 8.21×102m​/​s2
d
9.82 m​/​s and 9.03×102m​/​s2

detailed solution

Correct option is A

Velocity  v=aω=a×2π n=0.06×2π×15=5.65 m/s Acceleration  A=ω2a=4π2n2a=5.32×102 m/s2

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A horizontal platform with an object placed on it is executing S.H.M. in the vertical direction. The amplitude of oscillation is 3.92×103m . What must be the least period of these oscillations, so that the object is not detached from the platform 


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