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 2.88 m and a rotational inertia of 219 kg-m? about the axis of rotation. A 64.5 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 2.33 rad/s when the student starts at the rim, what is the angular speed when she is 0.904 m from the center?

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 2.88 m and a rotational inertia of 219 kg-m? about the axis of rotation. A 64.5 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 2.33 rad/s when the student starts at the rim, what is the angular speed when she is 0.904 m from the center?

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 54P: A cylinder with rotational inertia I1=2.0kgm2 rotates clockwise about a vertical axis through its...

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