Conceptual Physics (12th Edition)

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

Chapter 5 - Think and Explain: 68


In Figure 5.25, the friction vector f is equal and opposite to the vector sum of mg and N, if the shoe is in equilibrium. If the friction force f is less than that amount, a downhill net force acts on the shoe and it accelerates down the incline.
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