In the scenario where both people are pulling on a large box with equal force from opposite sides, the forces acting on the box are balanced. Each person exerts an equal force in opposite directions, resulting in a net force of zero.
For unbalanced forces to be present, one of the following must occur:
- One person pulls stronger than the other.
- One of the people releases their pull while the other continues to pull.
- An external force acts on the box (e.g., someone pushing on it from a different direction).
If both people are pulling equally, the forces are balanced, and the box will either remain at rest or continue to move at a constant velocity if it was already in motion.