TO CALCULATE THE VALUE OF g for the Earth

To calculate the value of g, we should put
the values of G, M and R ,
namely, universal gravitational constant, G = 6.7 × 10^–11 N m² kg^-2
, mass of the earth, M = 6 × 10²⁴ kg, and radius of the earth, R = 6.4 × 10⁶ m.
g =GM/R²
g = (6.7 × 10^–11 ) X (6 × 10²⁴ ) / ( 6.4 × 10⁶)²

g = 9.8 m s^–2
.
Thus, the value of acceleration due to gravity of the earth, g = 9.8 m s^–2
.