Question
Physics Question on Friction
A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are
A
up the incline while ascending and down the incline while descending.
B
up the inline while ascending as well as descending.
C
down the incline while ascending and up the incline while descending.
D
down the incline while ascending as well as descending.
Answer
up the inline while ascending as well as descending.
Explanation
Solution
The correct option is (B): up the inline while ascending as well as descending.