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92.

The moment of inertia of a body about a given axis is 2.4 kg–m2.  To produce a rotational kinetic energy of 750 J, an angular acceleration of 5 rad/s2 must be applied about that axis for

(a)  6 sec

(b)  5 sec                                               

(c)   4 sec

(d)  3 sec

Ans. b

(10)

5/5 - (1 vote)

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