## Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson

# Chapter 8 - Dynamics II: Motion in a Plane - Exercises and Problems - Page 211: 5

#### 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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