Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 8 - Rotational Motion - Problems: 4

Answer

$-170\frac{rad}{s^2}$.

Work Step by Step

Find the initial angular velocity. $$6500 \frac{rev}{60 s}\frac{2 \pi rad}{rev}=681 \frac{rad}{s}$$ Use the definition of angular acceleration. $$\alpha=\frac{\Delta \omega}{\Delta t}=\frac{0-681 rad/s}{4.0s}=-170\frac{rad}{s^2}$$
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