Conceptual Physics (12th Edition)

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

Chapter 7 - Think and Rank: 54

Answer

Scale reading, highest to lowest: A, B=C.

Work Step by Step

Input force multiplied by input distance equals output force multiplied by output distance. In situation A, the output moves 1 m for each 1.0 m of input movement, so the scale reading (same as the tension) equals the crate's weight. In situations B and C, the output moves 0.5 m for each 1.0 m of input movement, so the scale reading (same as the tension) is half the crate's weight. This problem may also be analyzed using Newton's second law, and considering the forces on the crate when it is in equilibrium.
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.