. 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 = 
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