Chapter 9, Problem 1RQ

Angular velocity is measured in

1. a. revolutions/minute.
2. b. radians/second.
3. c. revolutions/second.
4. d. all of the above.

To determine

Choose the correct option.

Answer to Problem 1RQ

The correct option is “d. all of the above”.

Explanation of Solution

Formula used:

Consider the expression for angular velocity.

$\omega =\frac{\theta }{t}$ (1)

Here,

$\theta$ is the angle, and

$t$ is the time period.

Description:

Unit for the angle $\left(\theta \right)$ of an object can be revolution or radian, and unit for time $\left(t\right)$ can be second or minute. Therefore, from (1) the unit of angular velocity can be $\frac{\text{revolution}}{\text{minute}}\text{or}\frac{\text{radian}}{\text{second}}\text{or}\frac{\text{revolution}}{\text{second}}$. Hence, options a, b, and c are true. Thus, the correct option is “d”.

Conclusion:

Thus, the correct option is “d. all of the above”.