A ballet student with her arms and a leg ex- tended spins with an initial rotational speed of 2.0 rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 1.4 kg. m² and her angular velocity is 5.0 rev/s. Determine the ballet student's initial rota- tional inertia. A 0.2 kg.m² B 1.4 kg m² C 4.0 kg-m² D 3.5 kg-m²

A ballet student with her arms and a leg ex- tended spins with an initial rotational speed of 2.0 rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 1.4 kg. m² and her angular velocity is 5.0 rev/s. Determine the ballet student's initial rota- tional inertia. A 0.2 kg.m² B 1.4 kg m² C 4.0 kg-m² D 3.5 kg-m²

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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