Arrangement of four masses is shown in the figure. If a 1 kg mass is placed at the center, force on it is F₁. If 3m and 4m masses are interchanged, force becomes F₂. Find F₁/F₂.
After applying vector addition of gravitational forces before and after interchanging 3m and 4m masses:
F1/F2 = 2/5
Answer: 2/5