Answered: _____7. The moment of inertia of a body…

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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Question

_____7. The moment of inertia of a body about an axis depends on its

a) angular velocity b) mass distribution c) angular acceleration d) none of these

_____8. A supercar engine delivers a power of 895 kW corresponding to a maximum angular speed of 6400 rev/min. What is the torque produce by the engine?

a) 668 N⋅m b) 895 N⋅m c) 640 N⋅m d) 1336 N⋅m

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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