Question

a rope is used to pull a metal box a distance of 15.0 m across the floor. the rope is held at an angle of 46.0 degrees with the floor, and a force of 628 N is applied to the rope. how much work does the rope do on the box

Answer 1

Work = F d cosθ. Here W = (628 N)(15.0 m) cos(46.0°) = 9420·cos(46°) ≈ 6.54×10^3 J.

So the rope does about 6.54 kJ of work on the box (positive).