Question

We are seated on the surface of the earth. What is the gravitational strength of the earth on you if the mass of the earth is 5.9x1024kg and a radius of 6.4x106 m?

Answer 1

$$g=\frac{GM}{R^2}\\g=\frac{(6.67\cdot10^{-11})(5.9\cdot10^{24})}{(6.4\cdot10^{6})^2}=9.6\frac{m}{s^2}$$