Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 8 - Rotational Motion - Problems: 64

Answer

0.38 rev/s.

Work Step by Step

There is no net external torque on the diver, so her net angular momentum is conserved. $$L_{tuck}=L_{straight}$$ $$I_t \omega_t = I_s \omega_s$$ $$\omega_s=\frac{I_t }{I_s}\omega_t $$ $$\omega_s=\frac{1}{3.5}(\frac{2rev}{1.5s})=0.38\frac{rev}{s}$$
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