When the distance between two stars decreases by one-third, the force between them

the force increases by 9/4

Explanation:

The gravitational force between two stars is given by:

where

G is the gravitational constant

m1 and m2 are the masses of the two stars

r is the separation between the two stars

In this problem, the distance between the two stars is decreased by 1/3, which means that the new distance is

So, the new gravitational force will be

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