Question

1. Shaniya and Maxine move a box of toy with a mass of 20 kg from an initial position to one that is 8 m away towards the right. Shaniya on the left of the box pushes the box with a force of 5 N at an angle of 10? downward from the horizontal while Maxine on the right of the box pulls it with a force of 5 N 200 abovethe horizontal. The forces exerted by both girls are constant. What is the net work (Wnet) the two girls exert on the box?

Answer 1

$W_{net}=W_1+W_2=(F_1+F_2)l=Fl(\sin10°+\sin20°)=20.6~\text J.$