Answered: A circular disc is initially rotating…

A circular disc is initially rotating at 3.2 rad/s and has a constant angular acceleration. After 1.1 s it has rotated through 1.9 rad. Its angular acceleration (rad/s2)is:

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 88AP: A rod 3.0 m in length is rotating at 2.0 rev/s about an axis at one end. Compare the centripetal...

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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

I Physics I-Spring21
Time left 0:23:14
A circular disc is initially rotating at 3.2 rad/s and has a constant angular acceleration. After 1.1 s it
has rotated through 1.9 rad. Its angular acceleration (rad/s)is:
O a. -2.68
O b. -1.34
O c. -13.39
O d. -0.67
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