What do we call the gravitational force between the earth and an object?

Find the weight of an $80\, kg$ man on the surface of the moon. What would be his mass on the Earth and on the moon? $(g_{e} = 9.8\, m s^{-2}, g_{m} = 1.63\, m s^{-2})$

Show that the weight of an object on the moon is one-sixth of its weight on the earth. [Given: mass of earth $= 5.98 \times 10^{24} \ kg$,mass of moon $= 7.36 \times 10^{22} \ kg$,radius of earth $= 6.37 \times 10^{6} \ m$,radius of moon $= 1.74 \times 10^{6} \ m$]

List in tabular form any three differences between $g$ and $G$.

What will be the mass of a body at the centre of the earth as compared to other places on the earth?

Why is the weight of an object on the moon $\frac{1}{6}^{th}$ its weight on the Earth?