The accepted value of g depends on the location and the mass of the massive body. On Earth, the acceleration of gravity or the value of g is 9.8 m/s² at sea level. However, there are slight variations in the value of g around Earths surface, and the value of g varies inversely with the distance from the center of the Earth. The gravitational constant, denoted by G, is a proportionality constant used in Newtons Law of Gravitation. The value of G is approximately 6.674×10−11 N⋅m²/kg² in SI units.