Answer
$ \omega = 6.34 \ revs/s$
Work Step by Step
We find the initial rotational inertia:
$I = 5.7 + 5(.76^2)=8.588$
We use conservation of angular momentum to find:
$8.588(3.1)=4.2\omega \\ \omega = 6.34 \ revs/s$
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 10 - Exercises and Problems - Page 186: 56
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