Team A is winning because they are moving away and dragging the other team along with them.
- I know that the forces are unbalanced because one side is causing the other side to accelerate towards them.
- To balance the forces you could add another person to team B.
- If the forces were balanced the rope wouldn't move to either side.
- If team B had a running start then the other side would suddenly start accelerate towards them and they might be the winning team.