1. A spinning figure skater is rotating at 12 rad/s with her arms extended away from her body. She then pulls her arms inward, which causes her to rotate at 18 rad/s. a) Explain why the figure skater's angular velocity increased when she pulled her arms in. b) The initial moment of inertia of the skater was 100 kg-m². Calculate the final moment of inertia of the skater.

1. A spinning figure skater is rotating at 12 rad/s with her arms extended away from her body. She then pulls her arms inward, which causes her to rotate at 18 rad/s. a) Explain why the figure skater's angular velocity increased when she pulled her arms in. b) The initial moment of inertia of the skater was 100 kg-m². Calculate the final moment of inertia of the skater.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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