Question

Question #4bf75

Answer 1

According to the latest, most accurate NASA study, it is pretty much the same everywhere.

Explanation:

See the map at

http://earthobservatory.nasa.gov/IOTD/view.php?id=3666

Even the variations notes are VERY slight compared to the average.

The shape of earth is not completely circular.It has oval shape and the radius of earth is less in poles rather than equator since
gravity is given by formula

`F=G(Mm)/R^2` where

`G` is the gravitational constant and `M` is mass of the Earth, `m` is mass of object and `R` is radius of Earth.

Evident from the formula above is gravity, `g=GM/r^2`

For constant mass, `g` is inversely proportional to square of the radius. Hence `g` is lowest at equator where due to equatorial bulge, `r` is highest.