A figure skater begins a spin at an angular velocity of 200 rpm with her arms and
Question:
A figure skater begins a spin at an angular velocity of 200 rpm with her arms and legs out away from her body (Fig. 9.11A). She then pulls her arms and legs in close to her body, and her angular velocity increases. Estimate her final angular velocity.
Concerned with the magnitude of the angular momentum, not its sign.
Figure 9.11A
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0 S
Step by Step Answer:
When the skater pulls her arms in she reduces her moment of inertia Since angular momentum must be c...View the full answer
College Physics Reasoning and Relationships
ISBN: 978-0840058195
2nd edition
Authors: Nicholas Giordano
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Angular movements are produced when the angle between the bones of joint changes. There are several different types of angular movements, including flexion, extension, hyperextension, abduction, adduction, and circumduction. Flexion, or bending, occurs when the angle between the bones decreases. Moving the forearm upward at the elbow or moving the wrist to move the hand toward the forearm are examples of flexion. The extension is the opposite of flexion in that the angle between the bones of a joint increase.
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