Thread: Angular Speed.....

Find the angular speed of a point on the earth surface. That is all that is given, assume that Radius is 6400km. how do I set this up.

angular velocity is the same for all points on the earth except the poles.

Hello, Brndo4u!

There is either too much information or insufficient information.

Find the angular speed of a point on the Earth's surface.
Assume that radius of the Earth is 6400 km.

Every point on the Earth, except the two poles, turns though 360° every 24 hours.

. . Hence, the point moves: .

And the radius of the Earth is irrelevant.



If the speed is to be in kilometers per hour,
. . we should have been given the latitude of the point.

Assuming that point is on the Equator,
. . the circumference is: . km.

Then the point moves at: . km/hr.