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: 3

Answer

Each player must pull with a force of 508 N

Work Step by Step

Since the sled moves at a steady speed, the acceleration is zero, so the net force on the sled is also zero. The sum of the forward-pointing component $F_x$ of each player's force $F$ must be equal in magnitude to the friction force. Therefore; $2~F_x = F_f$ $2~F~cos(10^{\circ}) = F_f$ $F = \frac{1000~N}{2~cos(10^{\circ})}$ $F = 508~N$ Each player must pull with a force of 508 N
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