Charles is trying to move a heavy boulder up a hill, but is having some trouble. Sam tells him that rolling it up the hill will be much easier than lifting it. This is because:

Question

Quizplus · Accepted Answer

When rolling the boulder, less work is done. This is because the force exerted by gravity on the boulder will no longer have to be borne by Charles. Instead he only has to produce enough work to overcome the height of the hill.

Charles Is Trying to Move a Heavy Boulder Up a Hill