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 - Conceptual Questions - Page 153: 6

Answer

There are two forces acting on the elevator. The force of gravity points straight down. The tension force from the cable points straight up. Since the elevator is moving downward and slowing down, the acceleration vector points upward. Therefore, the net force points upward and the magnitude of the tension force is greater than the force of gravity.

Work Step by Step

There are two forces acting on the elevator. The force of gravity points straight down. The tension force from the cable points straight up. Since the elevator is moving downward and slowing down, the acceleration vector points upward. Therefore, the net force points upward and the magnitude of the tension force is greater than the force of gravity.
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