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Question

A body of mass m slides down on an incline plane. It reaches at the bottom with a velocity v. If the
same mass were in the form of the ring which rolls down this inclined, the velocity of the ring at the bottom’s

A
2v
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B
12v
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C
v
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D
2v
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Solution

The correct option is B 12v
mgh=12mv212mR2×ω2+12mv2=mghv=v2

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