A 12-kg box slides down a rough ramp at constant speed as shown in the animation (position is in meters and time is in seconds). Note that both gravity and friction do work on the box.
What is the work done on the box by friction while it is in motion? Start Help
-60 J.
See Giancoli-PA: 6-3, Giancoli-SE: 7-4.
Physlet problem authored by Aaron Titus.