In the figure shown if coefficient of friction is `mu`, then `m_(2)` will start moving upwards if

Options

A. `(m_(1))/(m_(2)) gt sin theta - mu cos theta`
B. `(m_(1))/(m_(2)) gt sin theta + mu cos theta`
C. `(m_(1))/(m_(2)) gt mu sin theta - cos theta`
D. `(m_(1))/(m_(2)) gt mu sin theta + cos theta`

Answer

B

Explanation

(b) `m_(1)g gt m_(2)g sin theta+mum_(2)g cos theta`
`implies" " (m_(1))/(m_(2))gt sin theta+ mu cos theta`