7.5 Nonconservative Forces

Friction and other path-dependent forces that drain mechanical energy, folded into the balance as the work they do on the system.

College Physics 2e, 7.5 Nonconservative Forces

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1 exercise

7.5 Exercise 1

You are in a room in a basement with a smooth concrete floor (friction force equals 40 N) and a nice rug (friction force equals 55 N) that is 3 m by 4 m. However, you have to push a very heavy box from one corner of the rug to the opposite corner of the rug. Will you do more work against friction going around the floor or across the rug, and how much extra?

Across the rug is 275 J extra
Around th…

2.5