Question

what happens when the forces acting on an object are not balanced

Answer 1

When two forces acting on an object are not equal in size, we say that they are unbalanced forces. If theforces on an object are unbalanced this is what happens: an object that is not moving starts to move. an object that is moving changes speed or direction

Answer 2

It creates the forces to be unbalanced. The one that happens to have more force will either pull or push. This is part of Newtons second law.