What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 `xx 10^(24)` kg and radius of the earth is 6.4 `xx 10^(6)` m. )

Explanation

g = G `(M)/(R^(2))`
= `(6 xx 10^(24))/(6.4 xx 10^(6)) xx 6.026 xx 10^(-11) = 9.8 `N