Two masses are placed close to each other. if the distance between the masses is increased twice as much, the force acting on the masses will?

The gravitational force between 2 masses is found by:

where G is a constant, are the masses and is the square of the distance between the two masses

Then, if the distance is increased twice, The force between the masses is decreased to the quarter. because of the reverse ratio  between F and

the answer is a 3.8cm

explanation:

not moving. pos accel,