Arope pulls on a metal box at an angle of 60.0° with a force of 255 n. the box moves horizontally for 15.0 m. how much work was done on the box?

The work done by the rope on the box is equal to:

where F is the force applied by the rope, d the  distance covered by the box and  is the angle between the direction of the force and of the displacement.

Using the data of the problem: ,  and , we find the work: