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
(56)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)