A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk. The platform has a radius of 4.64 m and a rotational inertia of 413 kg·m2 about the axis of rotation. A 56.9 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.52 rad/s when the student starts at the rim, what is the angular speed when she is 1.18 m from the center?

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Answered: A horizontal platform in the shape of a…

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 59P: A bug of mass 0.020 kg is at rest on the edge of a solid cylindrical disk (M=0.10kg,R=0.10m)...

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A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk. The platform has a radius of 4.64 m and a rotational inertia of 413 kg·m² about the axis of rotation. A 56.9 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.52 rad/s when the student starts at the rim, what is the angular speed when she is 1.18 m from the center?

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