Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 12 - Equilibrium and Elasticity - Questions - Page 344: 10c

Answer

Rope $B$ was shorter

Work Step by Step

İf system is in equilibrium then net torque is zero on center of mass. The direction of torques created by A and B are in opposite direction so the magnitudes must be same in order to create balanced torque. Therefore, $t_{A}=t_{B}$ Torques are the same but perpendicular distances are not the same as point A is more farther from the center of mass. Therefore, the force acting on rope B must be bigger than the force created by rope A to compensate for the difference in distances. So, $F_{B} > F_{A}$ Because force created by rope $B$ is bigger, the stretch of rope $B$ will be greater. Therefore, if they are of the same length, then rope $B$ must be shorter at the start.
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.