If the distance between the center of two objects is quadrupled. The gravitational force between the two objects will change by a factor of:
1) 16
2) 0.25
3) 4
4) 0.0625

F' = F/16

Explanation:

The gravitational force between masses is given by :

If the distance between the center of two objects is quadrupled, r' = 4r

New force will be :

So, the new force will change by a factor of 16.

the answer is a)

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