Question

Compute the gravitational force between the sun (M = 1.99×1030 kg) and the planet Saturn (m = 9.52×101 times the mass of the earth, orbital radius r = 9.516 A.U.).

Answer 1

Given is :-

Mass of the Sun  

Orbital radius   or   

Now,

Mass of the Earth is  

then the mass of the planet Saturn is  

Now,

the gravitational force is given by

by plugging all the values we get

which gives us