College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Which one I should choose and  why?

A skater spins about a fixed point on the ice. She begins with her arms extended and an initial angular velocity wo. She then pulls her arms in to her body. After her arms are pulled to her body, she spins with an angular velocity
final ,wf . Throughout the time she is spinning, no external forces are acting in the horizontal plane.
How do the magnitudes of the initial and final angular velocities compare?
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Transcribed Image Text:A skater spins about a fixed point on the ice. She begins with her arms extended and an initial angular velocity wo. She then pulls her arms in to her body. After her arms are pulled to her body, she spins with an angular velocity final ,wf . Throughout the time she is spinning, no external forces are acting in the horizontal plane. How do the magnitudes of the initial and final angular velocities compare?
OA wo > Wf
В.
Jm = Om
C.
w0 < uf
Е.
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Transcribed Image Text:OA wo > Wf В. Jm = Om C. w0 < uf Е.
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