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The displacement (in m) of a particle of...

The displacement (in m) of a particle of mass 100 gm from its mean position is given by the equation `Y=0.05 sin 3pi(5t +0.4)`

A

the time period of motion is 1/30 sec.

B

the time period of motion is 1/7.5 sec .

C

the maximum acceleration of the particle is `11.251pi^2 m//s^2`

D

the force acting on the particle is zero when the displacement is 0.05 m

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The correct Answer is:
B, C
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