Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)

4th Edition

ISBN: 9780134110684

Author: Randall D. Knight (Professor Emeritus)

Publisher: PEARSON

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal for…

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Textbook Question

Chapter 4, Problem 75EAP

A painted tooth on a spinning gear has angular acceleration α = 20 − t rad/s², where t is in s. Its initial angular velocity, at t = 0 s, is 300 rpm. What is the tooth’s angular velocity in rpm at t = 20 s?

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 .

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Chapter 4, Problem 74EAP

Chapter 4, Problem 76EAP

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Chapter 4 Solutions

Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)

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A painted tooth on a spinning gear has angular acceleration α = 20 − t rad/s 2 , where t is in s. Its initial angular velocity , at t = 0 s, is 300 rpm. What is the tooth’s angular velocity in rpm at t = 20 s?

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Chapter 4 Solutions