College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 5 - Work and Energy - Learning Path Questions and Exercises - Conceptual Questions - Page 173: 4

Answer

The work needed to be done is same in both cases, since height is same. But in zigzags, we walk more distance with same speed. So, it takes more time. In increasing the time, we decrease the power needed, which makes the task easier in zigzags.

Work Step by Step

The work needed to be done is same in both cases, since height is same. But in zigzags, we walk more distance with same speed. So, it takes more time. In increasing the time, we decrease the power needed, which makes the task easier in zigzags.
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