Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 2 - Think and Explain: 62

Answer

It is correct to say that no net force acts on your friend, but it would be incorrect to say that there are no forces at all.

Work Step by Step

Your friend is in static equilibrium, so the net force on her is zero. Forces such as gravity, the normal support force, and friction may be present, as long as they produce a zero net force.
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