Answer
$t_{r}$ is negative
Work Step by Step
Torque applied by the rope's tension on point $C$ is in clockwise direction as shown in the picture so it is negative.
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 12 - Equilibrium and Elasticity - Questions - Page 344: 7c
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