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in Rotational motion by (65.8k points)
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A cylinder of mass m and radius r is rotating about its axis with constant speed v Its kinetic energy is _____ 

(A) 2mv2 

(B) mv

(C) (1/2) mv

(D) [mv2 / 4]

1 Answer

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Best answer

Correct option: (D) [mv2 / 4]

Explanation:

K.E. in Rotation = (1/2) Iω2 = (1/2)[(MR2) / 2] × (V2 / R2) = [(MV2) / 4] 

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