Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 6 - Dynamics I: Motion Along a Line - Exercises and Problems: 5

Answer

The magnitude of the friction force on each hand and foot is 160 N.

Work Step by Step

The sum of the four friction forces is equal in magnitude to the weight of the gymnast. So, $4~F_f = mg$ $F_f = \frac{mg}{4}$ $F_f = \frac{(65~kg)(9.80~m/s^2)}{4}$ $F_f = 160~N$ The magnitude of the friction force on each hand and foot is 160 N.
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