Four forces of the same magnitude act on a square as shown in figure. The square can rotate about point `O`, mid point of one of the edges. The force which can produce greatest torque is

Options

A. `F_(1)`
B. `F_(2)`
C. `F_(3)`
D. `F_(4)`

Answer

C

Explanation

Perpendiculr distance of `F_(3)` is greatest from O, hence torque of `F_(3)` is greatest.