Mass of disk=M Radius of disk=R Girl's mass = m Walks towards center Consider the circular disk-shaped platform as shown above. The disk has radius R and mass M. It rotates anticlockwise with angular velocity w. A girl is standing on the circumference of the disk (initially). She starts walking towards the center of the disk until the angular velocity of the disk becomes w'. The girl's mass is m. The final position of the girl from the center of the disk is given as, Or = R/(1+ ) - M Or=Ry(1- Ⅲ)음 M 2m 2m Or = R/(1+ m) none of the above

Mass of disk=M Radius of disk=R Girl's mass = m Walks towards center Consider the circular disk-shaped platform as shown above. The disk has radius R and mass M. It rotates anticlockwise with angular velocity w. A girl is standing on the circumference of the disk (initially). She starts walking towards the center of the disk until the angular velocity of the disk becomes w'. The girl's mass is m. The final position of the girl from the center of the disk is given as, Or = R/(1+ ) - M Or=Ry(1- Ⅲ)음 M 2m 2m Or = R/(1+ m) none of the above

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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A disk initially at rest is fixed to a vertical axis of rotation and a 40 kg child is standing on the disk initially at rest 0.5 meters away from the axis of rotation. The rotational inertia of the disk is 50 kgm2. The boy pushes and jumps off the disk and the disk begins to rotate at 0.5 rad/s. Calculate the velocity of the child as they push off the disk. (The rotational inertia of the boy is mr2)
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