Since F=Gmm/r^2,
r becomes 4/5 r, so F grows by a factor of (5/4)^2 = 26/16 = 1 9/16
What happens to the gravitation force between two objects that are 15 m apart, when one of them moves 3 m closer?
It decreases by a factor of 1 9/16.
It decreases by a factor of 1 1/4.
It increases by a factor of 1 9/16.
It increases by a factor of 1 1/4.***
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