There are two planets A and B of masses m1 and m2 respectively. They revolve around the sun in circular orbit. The orbital radius of A from the sun is twice that of orbital radius of B. The mass of A is twice that of mass B. Compare the forces of gravitation between A to Sun and B to Sun.


Dear Student ,

We know that universal gravitational law is F= Gm1m2r2SO according to the question F1=Gm2×Sun(R2)2given M1=2M2,r1=2r2So F2=G2M2×Sun(2R2)2F2=12GM2×Sun(R2)2F2=12F1
Regards
 

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The force of gravitation on A would be twice than that on B as the ratio comes out to be 2:1.
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The gravitational force of A will be half of gravitational force of B .

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