Here's a breakdown:

* Concurrent forces: Forces that act on the same point or object and have lines of action that intersect at a single point.

* Resultant force: When concurrent forces act in the same direction, their magnitudes add up to create a larger resultant force.

Example:

Imagine you are pushing a box forward, and a friend is also pushing the box forward from the same side. Both forces are acting in the same direction, and the box will move with a greater force than if you were pushing it alone.

Let me know if you'd like more explanation or examples!