Final answer:
The strong-arm team won due to superior technique and strength. The forces involved are tension and friction.
Step-by-step explanation:
In a tug-of-war, the strong-arm team would have won due to their superior technique and strength. The forces involved in a tug-of-war are tension and friction. Tension is the force exerted by each team on the rope in opposite directions, while friction comes into play between the rope and the hands of the players.