A uniform disk of mass 401 kg and radius 0.24 m is mounted on frictionless bearings so it can rotate freely around a vertical axis through its center (see the following figure). A cord is wrapped around the rim of the disk and pulled with a force of 10 N. sten. 10 N (a) How much work (in 3) has the force done at the instant the disk has completed four revolutions, starting from rest? (b) Determine the torque due to the force. (Enter the magnitude in Nm) N m Calculate the work (in 3) done by this torque at the instant the disk has completed routions . (c) What is the angular velocity (in rad/s) at that instant? (Enter the magnitude)

A uniform disk of mass 401 kg and radius 0.24 m is mounted on frictionless bearings so it can rotate freely around a vertical axis through its center (see the following figure). A cord is wrapped around the rim of the disk and pulled with a force of 10 N. sten. 10 N (a) How much work (in 3) has the force done at the instant the disk has completed four revolutions, starting from rest? (b) Determine the torque due to the force. (Enter the magnitude in Nm) N m Calculate the work (in 3) done by this torque at the instant the disk has completed routions . (c) What is the angular velocity (in rad/s) at that instant? (Enter the magnitude)

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 50P: A disk with moment of inertia I1 rotates about a frictionless, vertical axle with angular speed i. A...

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