A body of mass `10 kg` is lying on a rough inclined plane of inclination `37^(@)` and `mu = 1//2` , the minimum force required to pull the body up the plane is

Options

A. `80 N`
B. `100 N`
C. `120 N`
D. `60 N`

Answer

B

Explanation

`F_(min) = mg sin theta + f_(max)`
` = mg sin theta + f_(max)`
`mg ( sin 37^(@) + mu cos 37^(@))`
`= 10 xx 10((3)/(5) + (1)/(2) xx (4)/(5))`
`= 100 N`