Question 15.
Solve the following example.
The mass of the earth is 6 x 1024 kg. The distance between the earth and the Sun is 1.5x 1011 m. If the gravitational force between the two is 3.5 x 1022 N, what is the mass of the Sun?
Use G = 6.7 x 10-11 N m2 kg-2
Answer:
Gravitational force of attraction between two bodies of masses m1 and m2separated by a distance of R is given by;
G = Gravitational constant
Putting values of m1 = 
;
;
.
⇒ 
Since 
Since 
.
Therefore mass of the sun is
