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91. The total kinetic energy of a body of mass 10 kg and radius 0.5 m moving with a velocity of 2 m/s without slipping is 32.8 joule. The radius of gyration of the body is

(a)           0.25 m

(b)          0.2 m     

(c)           0.5 m

(d)          0.4 m

Ans. d

(37)

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