Answer
$\alpha=2 rad/s^2$
Work Step by Step
The formula for angular acceleration is:
$\theta=\frac{1}{2}\alpha t^2$
We rearrange this formula to find $\alpha$ and solve:
$\alpha=\frac{2\theta}{t^2}=\frac{2(25rad)}{(5.0s)^2}=2 rad/s^2$
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 - Problems - Page 287: 10a
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