Question

A solid cylinder of mass `m` rolls without slipping down an inclined plane making an angle `theta` with the horizontal. The frictional force between the cylinder and the incline is
A. `mg sintheta`
B. `(mg sin theta)/3`
C. `mg cos theta`
D. `(2 mg sin theta)/3`

Answer 1

Correct Answer - B
`f=mgsin theta((k^(2))/(k^(2)+R^(2)))`