Gravity is the same everywhere on the planet. The equator is special. Thinks that South is “down”. Considers rotation Accounted for the oblateness of Earth. Considers magnetism. Considers position of Sun=Moon.
Gravity is the same everywhere on the planet.The equator is special.Thinks that South is “down”.Considers rotationAccounted for the oblateness of Earth.Considers magnetism.Considers position of Sun=Moon.