1. A horizontal platform in the shape of a disk rotates in the horizontal plane about a frictionless vertical axle. The platform has a mass of 150 kg and a radius 2.5m. A student whose mass is 30 kg walks slowly from the rim of the disk towards its center.lf the angular speed is 1.5 rad/s when the boy is at the rim (a)What is the angular speed when the student has reached a point 1.0 m from the center?

1. A horizontal platform in the shape of a disk rotates in the horizontal plane about a frictionless vertical axle. The platform has a mass of 150 kg and a radius 2.5m. A student whose mass is 30 kg walks slowly from the rim of the disk towards its center.lf the angular speed is 1.5 rad/s when the boy is at the rim (a)What is the angular speed when the student has reached a point 1.0 m from the center?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

1. A horizontal platform in the shape of a disk rotates in the horizontal plane
about a frictionless vertical axle. The platform has a mass of 150 kg and a
radius 2.5m. A student whose mass is 30 kg walks slowly from the rim of the
disk towards its center.lf the angular speed is 1.5 rad/s when the boy is at
the rim (a)What is the angular speed when the student has reached a point
1.0 m from the center?

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