Answer
Positive.
Work Step by Step
Since the slope is increasing in the positive direction from its minimum value towards maximum. So the $\theta (t)$ is positive at point $1$, therefore, the angular velocity is positive.
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 10 - Rotation - Questions - Page 286: 4a
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