if opposite force is equal than how the object move

Asked by Hitesh Sharma | 31st May, 2014, 08:54: PM

Expert Answer:

Newton's Third Law of Motion states that, “to every action there is an equal and opposite reaction”.
But in an interaction of two bodies, there are action and reaction forces present.
Action and reaction forces do not cancel each other even though they are equal and opposite, because they are not acting on one and the same object .
Action acts on one body and reaction on the other.
For example:
If you are pushing a table , you are applying a force on the table( action force). The action force acts on the table and not upon you.
According to the Newton's law, the table exerts an equal but opposite force on you(reaction force) .The reaction force acts on you and not upon the table .
To determine the motion of the object you have to consider the force acting on one and the same object.
Movement requires an unbalanced force .

Answered by Jyothi Nair | 3rd Jun, 2014, 10:33: AM