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Q.

Two uniform solid spheres having unequal masses and unequal radii are released from rest at the same height on a rough inclined plane . If the spheres roll without slipping

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a

The heavier sphere reaches the bottom first

b

The bigger sphere reaches the bottom first

c

The two spheres reach the bottom together

d

The information given is not sufficient to tell which sphere will reach bottom

answer is C.

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Detailed Solution

a=gsinθ1+K2R2 for solid sphere K2R2=25 so acceleration is independent of mass and radius. 

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