Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 11 - Exercises and Problems - Page 203: 67


d. clockwise

Work Step by Step

Once again, the position vector, r, is in the direction of the arrowhead. Since the force is due to the gravitational pull of the weight, the force is downward. We know that torque is equal to r cross F, so we use the right hand rule to see that the disk will go in the clockwise direction when viewed from above.
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