A non-rotating perfect sphere of uniform mass density, or whose density varies solely with distance from the centre (
Gravity … See more

Gravity acceleration is a vector quantity, with direction in addition to magnitude. In a spherically symmetric Earth, gravity would point directly towards the sphere's centre. As the Earth's figure is slightly flatter, there are conseq… See more

Tools exist for calculating the strength of gravity at various cities around the world. The effect of latitude can be clearly seen with gravity in high-latitude cities: Anchorage (9.826 m/s ), Helsinki (9.825 m/s ), bein… See more

If the terrain is at sea level, we can estimate, for the Geodetic Reference System 1980, , the acceleration at latitude :
This is the International Gravity Formula 1967, the 1967 Geodetic Reference System Formula, H… See more

From the law of universal gravitation, the force on a body acted upon by Earth's gravitational force is given by
where r is the distance between the centre of the Earth and the body (see below), and here we take to … See more