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Q.

A hollow sphere and a solid sphere having same mass and same radii are rolled down a rough inclined plane without slipping,

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a

The hollow sphere reaches the bottom first

b

The solid sphere reaches the bottom with greater speed

c

The solid sphere reaches the bottom with greater kinetic energy

d

The two spheres will reach the bottom with same linear momentum

answer is B.

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Detailed Solution

Using  , we get for hollow sphere and for solid sphere . Again from v2 = 0 + 2as, we can write v2 > v1
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A hollow sphere and a solid sphere having same mass and same radii are rolled down a rough inclined plane without slipping,