Physics

Problem

A block is pulled

4\,\text{m}

due east by three constant forces acting simultaneously:

F_A = 50\,\text{N}

due east,

F_B = 30\,\text{N}

due west,

F_C = 40\,\text{N}

acting at

60^\circ

north of east. (a) Calculate the work done by each force during the displacement. (b) Which force performs the greatest positive work?