Chapter 10, Problem 3A

Distinguish between linear speed and rotational speed.

To determine

To explain: The difference between linear speed and rotational speed.

Explanation of Solution

Introduction:

Object moving in straight line has a linear motion and as linear velocity. Object rotating around a fixed axis have rotational speed.

Linear speed is the speed when objects moving in a straight line with velocity. It's SI unit is m/s. A car moving 10 m/s towards north.

Rotational speed is the speed with which object rotates around a axis. It is also known as angular speed. It’s SI unit is rad/s. A wheel rotating with rotating speed of 20 rad/sec.

Conclusion:

Linear sped is when object moves in straight line and rotating speed is along the axis around which object rotates.