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Question

If the equation for the displacement of a particle moving on a circular path is given by (θ)=2t3+0.5, where θ is in radians and t in seconds, then the angular velocity of the particle after 2s from its start is

A
8rad/s
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B
12rad/s
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C
24rad/s
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D
36rad/s
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Solution

The correct option is C 24rad/s
Angular displacement of the particle θ(t)=2t3+0.5 radians
Angular velocity w=d[θ(t)]dt=6t2 rad/s
Angular velocity at t=2 s wt=2=6×22=24 rad/s

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