The working projection plane is taken at the equatorial plane corresponding to the ground surface.
Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane.
The working projection plane is taken at the equatorial plane corresponding to the ground surface.
Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane.