TO solve the force of attraction between the Earth and the
Moon we use Newton's Law of Gravitation.
The gravitational
force between two objects of mass m1 and m2 placed a distance d apart is m1*m2*G*r^2,
where G is the universal gravitational constant.
So now the
mass of the moon is 7.35E+22 Kg. Mass of the Earth is 5.98E+24 Kg. The Gravitational
constant is 6.67E-11 nt-m2/Kg2.
The distance between the
Earth and the Moon is 3.85E+08 m
Therefore the
gravitational force of attraction between the Earth and the Moon
is:
6.67* 10^-11 nt-m^2/Kg^2 * 7.35*10^22 kg* 5.98*10^24 kg
*(3.85E+08) ^2 m^2
= 1.98* 10^20
N
So the force of attraction between the
Earth and the Moon is 1.98* 10^20 N.
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