Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 10 - Rotation - Problems - Page 288: 14d

Answer

$48\ rev$

Work Step by Step

Given: initial angular speed $\omega_o = 0\ rev/s$ angular speed is given by $ω=10 rev/s$ angular acceleration $\alpha =1.041\ rev/s^2$ From rotational kinematics equations, we have $\omega^2 = \omega_o^2+2\alpha (\Delta\theta)$ $\Delta\theta = \frac{\omega^2 - \omega_o^2}{2\alpha}$ $\Delta\theta = \frac{(10\ rev/s)^2 - 0}{2(1.041\ rev/s^2}$ $\Delta\theta = 48\ rev$
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