Choose the correct value of ' $\mathrm{g}$ '.

When an object falls toward the earth, it experiences acceleration. This acceleration is called acceleration due to gravity or acceleration due to the gravitational force of the earth because it is caused by the earth's gravitational pull.

We know that Acceleration is due to gravity, $\mathrm{g}=\frac{{\mathrm{GM}}_{\mathrm{e}}}{{{\mathrm{R}}_{\mathrm{e}}}^2}$, 

G is the universal constant, 

R_e is the distance between the surface of the earth and its center,  

M_e is the mass of the earth it does not depend upon the test mass. 

The value of g near the surface of the earth is $9.8 {\mathrm{ms}}^{-2}$