A son disk of mass equal to 7.0 kg and radius of 30 cm changes its rotations gradually from 45 rpm to 120 rpm in 5.0 sec. 3. find the angular acceleration in rad/s². 4. how many revolutions has the disk turned in this 5.0 seconds? 5. find the change in rotational kinetic energy. 6. find its moment of inertia in kgm². 7. find the magnitude of torque needed to make such a change in rpm. 8. find the tangential acceleration of a point P on the outer rim of the disk. g R Р
A son disk of mass equal to 7.0 kg and radius of 30 cm changes its rotations gradually from 45 rpm to 120 rpm in 5.0 sec. 3. find the angular acceleration in rad/s². 4. how many revolutions has the disk turned in this 5.0 seconds? 5. find the change in rotational kinetic energy. 6. find its moment of inertia in kgm². 7. find the magnitude of torque needed to make such a change in rpm. 8. find the tangential acceleration of a point P on the outer rim of the disk. g R Р
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter10: Rotational Motion And Angular Momentum
Section: Chapter Questions
Problem 2PE: Integrated Concepts An ultracentrifuge accelerates from rest to 100,000 rpm in 2.00 min. (a) What is...
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2 Parts:
a) Find the magnitude of torque needed to make such a change in RPM
b) Find the tangential acceleration of a point P on the outer rim of disk
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