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 9 - Work and Kinetic Energy - Conceptual Questions: 3

Answer

The tension does positive work on the elevator. Gravity does negative work on the elevator.

Work Step by Step

The tension exerts a force on the elevator in the same direction as the displacement. Therefore the tension does positive work on the elevator. Gravity exerts a force on the elevator in the opposite direction from the displacement. Therefore gravity does negative work on the elevator.
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