Gravitation Question 311

Question: Two stars of mass [m1andm2] are parts of a binary system. The radii of their orbits are [r1andr2] respectively, measured from the C.M. of the system. The magnitude of gravitational force [m1] exerts on [m2] is

Options:

A) [m1m2G(r1+r2)2]

B) [m1G(r1+r2)2]

C) [m2G(r1+r2)2]

D) [(m1+m2)(r1+r2)2]

Show Answer

Answer:

Correct Answer: A

Solution:

  • [F=Gm1m2r2=Gm1m2(r1+r2)2] .


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