Answer
$9.3 \times 10^{-2}m$.
Work Step by Step
Each time the ball makes one revolution, it travels a distance $\pi D$ along the floor.
$$12.0 rev\frac{\pi D \, meters}{1 rev}=3.5 \, m$$
Solve for $D \approx 9.3 \times 10^{-2}\,m $.
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 8 - Rotational Motion - Problems - Page 222: 6
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