1.

A ring of mass M and radius R is released on an inclined as shown. If the coefficient of friction mu lt 1/2 tan theta, then during a displacement l:

Answer»

Acceleration of the RING `=g//2sintheta`
Acceleration of the ring `=g sin theta-mug COSTHETA`
work done by the FORCE of FRICTION `=mgl(sintheta-ucostheta)`
work done by the force of friction is zero

Answer :B


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