# The Earth takes 1 day to rotate once about its axis. What is the angular velocity of a point on the surface of the Earth?

##

I did this question and calculated the Angular velocity to be B but the exam answer booklet says A. Could someone please explain?

I did this question and calculated the Angular velocity to be B but the exam answer booklet says A. Could someone please explain?

##### 1 Answer

Jun 1, 2018

#### Explanation:

Every point on the earth's surface completes one circular orbit (centered at a point on the axis) in 1 day

Thus, the angular velocity is