Q5 of 15 Page 14

Solve the following example.

The masses of the earth and moon are 6 x 1024 kg and 7.4x1022 kg, respectively. The distance between them is 3.84 x 105 km. Calculate the gravitational force of attraction between the two?


Use G = 6.7 x 10-11 N m2 kg-2

Gravitational force of attraction between two bodies of masses m1 and m2separated by a distance of R is given by;


G = Gravitational constant;


Figure below illustrates the question well;



Putting values of m1 =;


m2 = ;


R = = m (since 1km = 1000m);







Therefore the gravitational force of attraction between the earth and the moon is .


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