A disk, initially rotating at 120 rad/s, is slowed down with a constant angular acceleration of magnitude 4.31 rad/s?. (a) How much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time? (a) Number Units (b) Number Units

A disk, initially rotating at 120 rad/s, is slowed down with a constant angular acceleration of magnitude 4.31 rad/s?. (a) How much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time? (a) Number Units (b) Number Units

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 10P: A wheel 2.00 m in diameter lies in a vertical plane and rotates about its central axis with a...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

2.5

A disk, initially rotating at 120 rad/s, is slowed down with a constant angular acceleration of magnitude 4.31 rad/s?. (a) How much time
does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time?
(a) Number
Units
(b) Number
i
Units

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