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 8 - Dynamics II: Motion in a Plane - Exercises and Problems: 6

Answer

The magnitude of the friction force on the car is 6750 N

Work Step by Step

The centripetal force is the net force which keeps an object moving in a circle. In this case, the force of friction provides the centripetal force. $F_f = \frac{mv^2}{r}$ $F_f = \frac{(1500~kg)(15~m/s)^2}{50~m}$ $F_f = 6750~N$ The magnitude of the friction force on the car is 6750 N.
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