4. A person of mass 75 kg stands at the center of a rotating merry-go-round platform of radius 3.0 m and moment of inertia of 820 kgm?. The platform rotates without friction at an angular velocity of 0.95 rad/s. The person walks radially towards the edge of the platform. Calculate the following; a) the angular velocity when the person reaches the edge. b) the rotational kinetic energy of the system (platform and person) before and after the person walks. (Assume the person acts like a point mass.)

4. A person of mass 75 kg stands at the center of a rotating merry-go-round platform of radius 3.0 m and moment of inertia of 820 kgm?. The platform rotates without friction at an angular velocity of 0.95 rad/s. The person walks radially towards the edge of the platform. Calculate the following; a) the angular velocity when the person reaches the edge. b) the rotational kinetic energy of the system (platform and person) before and after the person walks. (Assume the person acts like a point mass.)

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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