17. Under what condition(s) is the angular momentum of a rotating body, such as a spinning ice skater, conserved? (a) Each external force acting on the body must be zero. (b) Each external force and each exter- nal torque acting on the body must be zero. (c) Each external force may be nonzero, but the sum of the forces must be zero. (d) Each external torque may be nonzero, but the sum of the torques must be zero.

17. Under what condition(s) is the angular momentum of a rotating body, such as a spinning ice skater, conserved? (a) Each external force acting on the body must be zero. (b) Each external force and each exter- nal torque acting on the body must be zero. (c) Each external force may be nonzero, but the sum of the forces must be zero. (d) Each external torque may be nonzero, but the sum of the torques must be zero.

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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