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The moment of inertia of a solid cylinder about its axis is I. It is allowed to roll down an incline without slipping. If its angular velocity at the bottom be ω , then K.E. of the cylinder will be

(a)  Iω2

(b) (3/2) Iω2

(c)  2Iω2

(d)  (1/2)Iω2

Ans.  b

(47)

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