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111. A wheel of moment of inertia 10 kg

A wheel of moment of inertia 10 kg-m2 is rotating at 10 rotations per minute. The work done in increasing its speed to 5 times its initial value, will be

(a)           100 J

(b)          131.4 J

(c)           13.4 J

(d)          0.131 J

Ans. b

(13)

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