. A body of moment of inertia

of 3 kg-m2 rotating with an angular velocity of 2 rad/sec has the same kinetic energy as a mass of 12 kg moving with a velocity of

A. 8 m/s 

B. 0.5 m/s

C. 2 m/s 

D. 1 m/s

Best Answer

Ans: D

Sol: Rotational kinetic energy of the body = 1/2IW2 and translatory kinetic energy = 1/2mv2

According to problem = was

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