The ratio of the time taken by a solid sphere and that taken by a disc of the same mass and radius to roll down a smooth inclined plane from rest from the same height is

Question

The ratio of the time taken by a solid sphere and that taken by a disc of the same mass and radius to roll down a smooth inclined plane from rest from the same height is, 15 : 14, 15 : 14, 14 : 15, 14 : 15

MARKS App · Accepted Answer

t = 2 s g sin ⁡ θ 1 + K 2 R 2 t 1 t 2 = 1 + 2 5 1 + 1 2 = 14 15

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