Answered: A certain wheel has a rotational…

A certain wheel has a rotational inertia of 7.5 kg.m2. As it turns through 2.2 revolutions, its angular velocity increases from12 rad/s to 4.irad/s. If the net torque is constant its value (N.m) is:

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 9P

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

A certain wheel has a rotational inertia of 7.5 kg.m2. As it turns through 2.2 revolutions, its angular velocity
increases from12 rad/s to 4.irad/s. If the net torque is constant its value (N.m) is:

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