Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 11 - Exercises and Problems - Page 201: 30


Please see the work below.

Work Step by Step

We know that according to law of conservation of energy $L_i\omega_i=L_f\omega_f$ This simplifies to: $\omega_f=(\frac{L_i}{L_f})\omega_i$ $\omega_f=(\frac{8.588}{4.2})(3.0)=6.1\frac{rev}{s}$
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