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.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 88AP: Suppose you start an antique car by exerting a force of 300 N on its crank for 0.250 s. What is the...

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