The Acceleration Due to Gravity ‘g’ for Objects :

The acceleration due to gravity ‘g’ for objects on or near the surface of earth is related to the universal gravitational constant ‘G’ as (‘M’ is the mass of the earth and ‘R’ is its radius):

1. G = g M/R²
2. g = G M/R²
3. M = gG/R²
4. R = gG/M2