Answered: a. A large rotating flywheel uniformly…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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a. A large rotating flywheel uniformly increases in angular speed from rest to 0.200 rev/s in 33.0 s. What is its angular acceleration in radians per second per second?

b. The same flywheel again starts from rest and accelerates uniformly in the same time interval, but now the angular acceleration is double that found in part

It is half the value given in part (a).

It is quadruple the value given in part (a).

It is the same as the value given in part (a).

It is double the value given in part (a).

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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