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Q.

A hollow cylinder and a solid cylinder of the same mass and radius are released simultaneously from rest at the top of the same inclined plane, which will reach the ground first?

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a

both will take the same time

b

it cannot be predicted.

c

hollow cylinder

d

solid cylinder

answer is A.

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Detailed Solution

THE TIME TAKEN TO REACH THE BOTTOM IS GIVEN BY  T=2La

a = g sin θ1+IMR2, For solid cylinder I is less, so a is more, hence time taken will be less.

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A hollow cylinder and a solid cylinder of the same mass and radius are released simultaneously from rest at the top of the same inclined plane, which will reach the ground first?