(a) Explanation Given info: The angular velocity increases from − 6.00 rad / s to + 8.00 rad / s during the time interval t = 0 s to t = 7.00 s . Explanation: Take the counter clockwise rotation to be positive. Write the expression for angular acceleration. α z = d ω z d t Here, α z is the angular acceleration ω z is the angular velocity t is the time taken Substitute 8 (b) To determine At what time interval is the speed of the wheel increasing. (c) To determine The angular displacement of the wheel at t = 7.00 s .

Sears And Zemansky's University Physics With Modern Physics

13th Edition

ISBN: 9780321897961

Author: YOUNG, Hugh D./

Publisher: Pearson College Div

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Question

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

Chapter 9, Problem 8E

(a)

To determine

Whether the angular acceleration during the time interval positive or negative.

(b)

To determine

At what time interval is the speed of the wheel increasing.

(c)

To determine

The angular displacement of the wheel at t=7.00 s .

Expert Solution & Answer

Chapter 9 Solutions

Sears And Zemansky's University Physics With Modern Physics

Ch. 9 - Prob. 1DQ Ch. 9 - Prob. 2DQ Ch. 9 - Prob. 3DQ Ch. 9 - Prob. 4DQ Ch. 9 - Prob. 5DQ Ch. 9 - Prob. 6DQ Ch. 9 - Prob. 7DQ Ch. 9 - Prob. 8DQ Ch. 9 - Prob. 9DQ Ch. 9 - Prob. 10DQ

Ch. 9 - Prob. 11DQ Ch. 9 - Prob. 12DQ Ch. 9 - Prob. 13DQ Ch. 9 - Prob. 14DQ Ch. 9 - Prob. 15DQ Ch. 9 - Prob. 16DQ Ch. 9 - Prob. 17DQ Ch. 9 - Prob. 18DQ Ch. 9 - Prob. 19DQ Ch. 9 - Prob. 20DQ Ch. 9 - Prob. 21DQ Ch. 9 - Prob. 22DQ Ch. 9 - Prob. 1E Ch. 9 - Prob. 2E Ch. 9 - Prob. 3E Ch. 9 - Prob. 4E Ch. 9 - Prob. 5E Ch. 9 - Prob. 6E Ch. 9 - Prob. 7E Ch. 9 - Prob. 8E Ch. 9 - Prob. 9E Ch. 9 - Prob. 10E Ch. 9 - Prob. 11E Ch. 9 - Prob. 12E Ch. 9 - Prob. 13E Ch. 9 - Prob. 14E Ch. 9 - Prob. 15E Ch. 9 - Prob. 16E Ch. 9 - Prob. 17E Ch. 9 - Prob. 18E Ch. 9 - Prob. 19E Ch. 9 - Prob. 20E Ch. 9 - Prob. 21E Ch. 9 - Prob. 22E Ch. 9 - Prob. 23E Ch. 9 - Prob. 24E Ch. 9 - Prob. 25E Ch. 9 - Prob. 26E Ch. 9 - Prob. 27E Ch. 9 - Prob. 28E Ch. 9 - Prob. 29E Ch. 9 - Prob. 30E Ch. 9 - Prob. 31E Ch. 9 - Prob. 32E Ch. 9 - Prob. 33E Ch. 9 - Prob. 34E Ch. 9 - Prob. 35E Ch. 9 - Prob. 36E Ch. 9 - Prob. 37E Ch. 9 - Prob. 38E Ch. 9 - Prob. 39E Ch. 9 - Prob. 40E Ch. 9 - Prob. 41E Ch. 9 - Prob. 42E Ch. 9 - Prob. 43E Ch. 9 - Prob. 44E Ch. 9 - Prob. 45E Ch. 9 - Prob. 46E Ch. 9 - Prob. 47E Ch. 9 - Prob. 48E Ch. 9 - Prob. 49E Ch. 9 - Prob. 50E Ch. 9 - Prob. 51E Ch. 9 - Prob. 52E Ch. 9 - Prob. 53E Ch. 9 - Prob. 54E Ch. 9 - Prob. 55E Ch. 9 - Prob. 56E Ch. 9 - Prob. 57E Ch. 9 - Prob. 58E Ch. 9 - Prob. 59E Ch. 9 - Prob. 60E Ch. 9 - Prob. 61E Ch. 9 - Prob. 62E Ch. 9 - Prob. 63E Ch. 9 - Prob. 64E Ch. 9 - Prob. 65E Ch. 9 - Prob. 66E Ch. 9 - Prob. 67E Ch. 9 - Prob. 68E Ch. 9 - Prob. 69E Ch. 9 - Prob. 70E Ch. 9 - Prob. 71E Ch. 9 - Prob. 72E Ch. 9 - Prob. 73E Ch. 9 - Prob. 74E Ch. 9 - Prob. 75E Ch. 9 - Prob. 76E Ch. 9 - Prob. 77E Ch. 9 - Prob. 78E Ch. 9 - Prob. 79E Ch. 9 - Prob. 80E Ch. 9 - Prob. 81E Ch. 9 - Prob. 82E Ch. 9 - Prob. 83E Ch. 9 - Prob. 84E Ch. 9 - Prob. 85E Ch. 9 - Prob. 86E Ch. 9 - Prob. 87E Ch. 9 - Prob. 88E Ch. 9 - Prob. 89E Ch. 9 - Prob. 90E Ch. 9 - Prob. 91E Ch. 9 - Prob. 92E Ch. 9 - Prob. 93E Ch. 9 - Prob. 94E Ch. 9 - Prob. 95E Ch. 9 - Prob. 96E Ch. 9 - Prob. 97E Ch. 9 - Prob. 98E Ch. 9 - Prob. 99E Ch. 9 - Prob. 100E Ch. 9 - Prob. 101E

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