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 1.83 m and a rotational inertia of 261 kg-m² about the axis of rotation. A 73.1 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.97 rad/s when the student starts at the rim, what is the angular speed when she is 0.673 m from the center? Number Units

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 1.83 m and a rotational inertia of 261 kg-m² about the axis of rotation. A 73.1 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.97 rad/s when the student starts at the rim, what is the angular speed when she is 0.673 m from the center? Number Units

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter12: Rotation I: Kinematics And Dynamics

Section: Chapter Questions

Problem 74PQ

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