Answer:
The meaurement of the amount of friction a surface will generate is called the coefficient of friction.
When balanced forces follow up on an object, the object won't move. If you push against a wall, the wall pushes back with an equal but opposite force. Neither you nor the wall will move. Forces that cause a change in the motion of an object are unbalanced forces.
A discovery not the others
This is a balanced force because if the they are applying the same amount of force in opposite directions, the rope won't move any where