(A) : A disc released from the top of a fixed inclined plane rolls down without slipping if the inclined plane is rought only.(R ) : Friction does no work in pure rolling.

(A) : A disc released from the top of a fixed inclined plane rolls dow

1.	(A) : A disc released from the top of a fixed inclined plane rolls down without slipping if the inclined plane is rought only.(R ) : Friction does no work in pure rolling.
Answer» Both (A) and (R ) are TRUE and (R ) is the CORRECT EXPLANATION of (A) Both (A) and (R ) are true and (R ) is not the correct explanation of (A) (A) is true but (R ) is false Both (A) and (R ) are false Answer :B