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 3.35 m and a rotational inertia of 445 kg-m? about the axis of rotation. A 72.3 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 2.58 rad/s when the student starts at the rim, wha is the angular speed when she is 2.09 m from the center? Number i 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 3.35 m and a rotational inertia of 445 kg-m? about the axis of rotation. A 72.3 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 2.58 rad/s when the student starts at the rim, wha is the angular speed when she is 2.09 m from the center? Number i Units
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 89AP: A solid cylinder of mass 2.0 kg and radius 20 cm is rotating counterclockwise around a vertical axis...
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Angular speed, acceleration and displacement
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Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
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