Answered: A wheel with a radius of 30 cm starts…

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 4P

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A wheel with a radius of 30 cm starts from the rest. If the angular acceleration is 2 rad/s2. What is the speed of a point at the end of the wheel at t=3 s?

A.) 1.8 m/s.
B.) 2.5 m/s
C.) 3.2 m/s
D.) 4.6 m/s
E.) 6.0 m/s
F.) 7.8 m/s
G.) 9.6 m/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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