7. A flywheel (I = 50 kgm² ) starting from rest acquires an angular velocity of 220.0 rad/s while subject to a constant torque from a motor for 5 s. a. What is the angular acceleration of the flywheel? b. What is the magnitude of the torque?

7. A flywheel (I = 50 kgm² ) starting from rest acquires an angular velocity of 220.0 rad/s while subject to a constant torque from a motor for 5 s. a. What is the angular acceleration of the flywheel? b. What is the magnitude of the torque?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 86P: A flywheel (l=50kgm2) starting from rest acquires an angular velocity of 200.0 rad/s while subject...

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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.

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7. A flywheel (I = 50 kgm² ) starting from rest acquires an angular velocity of 220.0
rad/s while subject to a constant torque from a motor for 5 s.
a. What is the angular acceleration of the flywheel?
b. What is the magnitude of the torque?

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