Answer:
By increasing the distance between the two 50 kg objects compared with the distance between the 5 kg objects.
Step-by-step explanation:
The formula for the force between 2 objects is
Fg = (G m1 m2) / r^2
where Fg is the force, G = gravitational constant, m1 and m2 are the masses of the objects and r = the distance between the objects.
So as r is increased Fg is decreased.