Three forces acting on a body are shown in figure. To have the resultant force only along the y-directon, the magnitude of the minimum additional force needed si

Options

A. `(sqrt(3))/(4) N`
B. `sqrt(3) N`
C. `0.5 N`
D. `1.5 N`

Answer

C

Explanation

`F_(x) = 1 cos 60^(@) - 2 sin 30^(@) = -(1)/(2) = -0.5`
To make the `x` - component zero , apply a force `0.5 N` along the `x`- axis.