Answered: If the axis of rotation is specified,…

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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If the axis of rotation is specified, which of the following statements is not true in regard to a rigid body?

a. The distance between any chosen pair of points on the body remains the same.

b. The angular velocity is always the same everywhere on the body.

c. The angular acceleration is always the same everywhere on the body.

d. The linear velocity at every point on the body is always the same.

e. A rigid body does not permanently change its shape.

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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