Answer
Please see the work below.
Work Step by Step
We know that
$\tau=rF$
This can be rearranged as:
$r=\frac{\tau}{F}$
We plug in the known value to obtain:
$r=\frac{110}{90}=1.2m$
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 184: 21
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