Answer:
Step-by-step explanation:
According to law of gravitational fields You have already knew about factors that are affected on gravitational force
F ∝M1 ×M2
F ∝ (1 / R² )
F gravitational force
M1 ,M2 = Masses
R = Distance between two masses
There for if we double the length between masses force will be reduced 4 times when compared with previous value
F1 ∝ (1/R²) -------- (1)
F2 ∝(1/(2R)²) ------(2)
(1)/(2) F1/4 = F2