Question

Example 4: A UPS worker pushes a 10 kg box 5 m from a package sorter over to the ramp leading up to a delivery truck across a rough surface (u -0.50, 0.25). Once the box is there, she realizes that it is damaged, and must be repaired, so she pushes the box back to the sorter over the same 5 m path. Find the work done by friction on the box for (a) the trip over to the ramp and (b) the total round trip. Force Diagram(s): Apply Work Equation(s):

Answer 1

Ramp bdK Firu ran ran