posted by unknown .
Two point masses are located a distance, D, apart. The gravitational force of attraction between them can be quadrupled by changing the distance to
the force of gravitational attraction varies inversely with the square of the distance between the two objects Fg=Gm1m2/r^2 .
if the gravitational field distance is halved the field strength increases by a factor of 2^2=4
its 2/D shut up the rest of ya thank you p