Answered: FIGURE 7.13 The propeller's angular…

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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Shown is the angular velocity-versus-time graph for the propeller of a ship.
a. Describe the motion of the propeller.
b. Draw the angular acceleration graph for the propeller.

FIGURE 7.13 The propeller's angular velocity.
w (rad/s)
84
4
-t (s)
6 8 10 12
2
4
-4
-8

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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