A child of mass m = 40 kg is initially placed on the edge of a uniform disk, of mass M = 100 kg and radius R = 2.0 m, which is rotating with an angular speed w_i about a vertical axis passing through its center. The child moves on a radius and stops at the distance a = 1.5 m from the edge of the disk as indicated. If the final angular speed of the disk-child system is w_f= 4.5 rad/s, determine the initial angular speed w_i. Wf a m

A child of mass m = 40 kg is initially placed on the edge of a uniform disk, of mass M = 100 kg and radius R = 2.0 m, which is rotating with an angular speed w_i about a vertical axis passing through its center. The child moves on a radius and stops at the distance a = 1.5 m from the edge of the disk as indicated. If the final angular speed of the disk-child system is w_f= 4.5 rad/s, determine the initial angular speed w_i. Wf a m

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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