Balanced and Unbalanced

Situation A (below) is a Balanced Free body diagram. It is balanced because all the forces (friction, Fapp, normal force, and gravity) "balance" each other on all sides. Horizontally the force it has the same net force, (between friction and Fapp) and vertically it has the same net force. (Norm and gravity)

Situation B however shows something that is unbalanced. This object is unbalanced because there is friction effecting the object, but no force going the opposite direction with the same amount of force.