Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 25 - Think and Explain: 53

Answer

Yes, a cyclist will coast farther if the lamp (powered from the bicycle's generator) is shut off.

Work Step by Step

Energy is conserved. The energy that goes into lighting the lamp ultimately comes from the bike’s kinetic energy. By not lighting the lamp, that energy is available to push the bike just a bit farther against frictional forces.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.