Why are gluons needed to hold quarks together. If the 3 are in a line, equally spaced, with the oddball charge in the middle, they will attract quite strongly.
+2. -1. +2
If these charges are equally spaced, the attraction of the middle one in stronger than the repulsion of the outer two.
+2. -1. +2
If these charges are equally spaced, the attraction of the middle one in stronger than the repulsion of the outer two.