A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping through out these motions). The directions of frictional force acting on the cylinder are

A cylinder rolls up an inclined plane, reaches some height and then ro

1.	A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping through out these motions). The directions of frictional force acting on the cylinder are
Answer» up the incline while ASCENDING and down the incline while DESCENDING up the incline while ascending as WELL as descending down the incline while ascending and up the incline while descending down the incline while ascending as well as descending ANSWER :B