When multiple forces acting on a body does not produce any change in the state of rest or uniform motion or direction of motion of the body. Then the forces are called balanced forces.
For example; A person holding a briefcase in hand, a book resting on a table etc.
Unbalanced force:
If a number of forces acting on a body produce a change in its state of rest or uniform motion or direction of motion, then they are termed as unbalanced forces.
For example; A briefcase released from a person's hand, a stone dropped etc