Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 10 - Rotational Kinematics and Energy - Problems and Conceptual Exercises - Page 323: 5

Answer

The order of increasing angular speed is: tire, propeller, drill

Work Step by Step

First of all, we convert all the given angular speeds in $rad/s$ and then compare. $\omega_{tire}=\frac{2.00\times 10^3deg}{s}(\frac{\pi rad}{180deg})=34.9\frac{rad}{s}$ $\omega_{drill}=(\frac{400 rev}{min})(\frac{2\pi rad}{rev})(\frac{1min}{60s})=41.89\frac{rad}{s}$ $\omega_{propeller}=40.0\frac{rad}{s}$ The order of increasing angular speed is: tire, propeller, drill
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