Earth's speed of rotation at 39.60455?

rick29148

not a question .........................................................

Morningfox

39.60455 feet east from my house, the rotation speed is 749.65386 miles per hour. More or less.

ignoramus

Another illiterate so-called "question".

sojsail

The earth's angular velocity, anyplace you would like to measure it, is 2*pi radians/day.

Luke

85

az_lender

Maybe you're asking for the eastward motion of a surface point at latitude 39.605... , is that what your question is? There is no point in carrying the latitude to extreme precision, if you are not also reporting the altitude, and even the longitude could have an effect, as the "figure of the earth" is not exactly spherical. However, the simple assumptions would be (a) earth's rotational period is 23:56:04. (b) equatorial radius is 3963 miles. (c) radius at 39.605N is R*cos(39.605). Based on that, the circumference at 39.605 latitude is about 19185 miles, and it takes 23.9345 hours to cover that distance. So the eastward speed of a surface point would be around 802 mph.