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A solid cylinder of mass m and radius r ...

A solid cylinder of mass `m` and radius `r` is rolling on a rough inclined plane of inclination `theta`. The coefficient of friction between the cylinder and incline is `mu`. Then.

A

frictional force is always` mu mg cos theta`

B

friction is a dissipative force

C

by decreasing `theta` , frictional force decreases

D

friction opposes translation and supports rotation

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The correct Answer is:
C, D
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