2. A person is standing on a rotating platform with hands at his side. The rotation rate of the platform is 0.90 rev/s. The person then raises his arms to a horizontal position and the rotation rate decreases to 0.60 rev/s. Why does the rotation rate change? By what factor has the moment of inertia changed?

2. A person is standing on a rotating platform with hands at his side. The rotation rate of the platform is 0.90 rev/s. The person then raises his arms to a horizontal position and the rotation rate decreases to 0.60 rev/s. Why does the rotation rate change? By what factor has the moment of inertia changed?

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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