Posted by Anupam khatiwara on Wednesday, August 1, 2012 at 10:33am.
How does the force between two objects change when the mass of one object and distance between the two object are doubled.

Phystcs  MathMate, Wednesday, August 1, 2012 at 4:24pm
Newton's law of gravitation stipulates that the attractive force F between two objects of masses M and m at a distance r apart is given by:
F=GMm/r² where G is the gravitational constant.
From the above relation, can you figure out the ratio of the new force after the changes?
(compare with G(2M)m/(2r)²)
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