Three forces acting on a body are shown in the figure. To have the resultant force only along\ the

Question

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

Professor PC Thomas Classes · Answer

(c) : Taking $x$-components, the total should be zero.\ $1 	imes \cos 60^{\circ}+2 \cos 60^{\circ}+x-4 \cos 60^{\circ}=0$\