In which situation are unbalanced forces acting on an object?

• Two people stand on the same side of a large tire. One person pushes the tire and the other pulls the tire with equal force.
• Two people stand on opposite sides of a large tire. Both people push the tire with equal force.
• Two people stand on the same side of a large tire. Both people pull the tire with equal force.
• Two people stand on opposite sides of a large tire. Both people pull the tire with equal force.

Two people stand on opposite sides of a large tire. One person pushes the tire and the other pulls the tire with equal force.

In the situation where two people stand on opposite sides of a large tire and both people pull the tire with equal force, it's still "unbalanced" because they should be pushing, not pulling! Looks like they need to tire-d new methods.

The situation in which unbalanced forces are acting on an object is when two people stand on opposite sides of a large tire and both people pull the tire with equal force.

The situation where unbalanced forces are acting on an object is when two people stand on opposite sides of a large tire and push the tire with equal force. In this scenario, the forces on the tire are equal in magnitude but opposite in direction. This creates a net force, which causes the tire to accelerate or move in a particular direction. The tire will move in the direction of the greater force, experiencing unbalanced forces.