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22. A particle starts rotating from rest. Its angular displacement is expressed by the following equationθ =0.025t square-0.1t where θ is in radian and t is in seconds. The angular acceleration of the particle is

(a) 0.5 rad/sec² at the end of 10 sec

(b) 0.3 rad/sec² at the end of 2 sec

(c) 0.05 rad/sec² at the end of 1 sec

(d) Constant 0.05 rad/sec²

Ans. d

(36)

5/5 - (1 vote)

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