Answer
$\tau = 0$
Work Step by Step
Since the angular momentum is constant, the net torque on the particle is zero.
Therefore:
$\tau = 0$
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 11 - Rolling, Torque, and Angular Momentum - Problems - Page 322: 34a
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