A mass point of 1 unit is at 1 length unit.
A mass point of 1/2 unit is at 1/10 length unit.
A mass point of 1/4 unit is at 1/100 length unit.
Generally, it’s (1/2)^n mass at (1/10) ^n unit for every natural n, on the positive side of 0.
All gravitational net forces point to the left. Where is an opposite reaction force here?