A solid cylinder of mass `m` and radius `r` is rolling on a rough inclined plane of inclination `theta`. The coefficient of friction between the cylinder and incline is `mu`. Then.

Options

A. (`i`),(`ii`)
B. (`i`),(`iv`)
C. (`ii`),(`iii`)
D. (`iii`),(`iv`)

Explanation

`mg sin theta-f=ma`
`fR= I alpha=(1)/(2)mR^(2)((a)/(R ))=(1)/(2)maR`
`mg sin theta-f=2f`
`f=(1)/(3)mg sin theta`