A force pair, also known as an action-reaction force pair, is a concept in physics that describes the balanced forces between two interacting objects. According to Newton’s Third Law of Motion, whenever one object exerts a force on another object, the second object exerts an equal and opposite force on the first object. These two forces form a force pair.

The key characteristics of a force pair are:

1. The forces act on different objects.

2. The forces are equal in magnitude but opposite in direction.

3. The forces act along the same line of action, but in opposite directions.

Some examples of force pairs include:

-When you push on a wall, the wall pushes back on you with an equal force.

-When a book rests on a table, the table exerts an upward force on the book, and the book exerts a downward force on the table.

-When a person walks, their foot exerts a forward force on the ground, and the ground exerts an equal backward force on the foot.

Force pairs are an important concept in understanding the interactions between objects and the forces acting on them in various physical situations.