Explain me motion's 3rd law??
Answers
Newton's 3rd law of motion states that:
“For every action there is an equal and opposite reaction.”
It means that for every interaction between objects there are always 2 forces acting. The forces must be equal in magnitude. That is they must both be equally "strong." They also must be opposite - working in opposing directions.
When we walk our foot pushes on the floor and the floor pushes back on us - in the opposite direction, resulting in our moving in the direction we are walking.
It's a little difficult to understand that this happens anytime we have an interaction between objects. When we sit down on a chair, the chair pushes up on us. And, of course, when we hit someone, he/she's going to hit us back.
Newton’s third law states that for every action (force) in nature there is an equal and opposite reaction.
In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A. Notice that the forces are exerted on different objects.
OR
For every action there is an equal and opposite reaction.
So this means that I cannot imagine a real force ( i.e. a force not depending on a non inertial frame) alone: they exist always in couples whose vector sum is zero.
The sun attracts the earth but the earth attracts the sun with an opposite and equal force.
A computer is on the desk and its weight is balanced by an equal and opposite reaction of the desk.
The locomotive pulls a wagon and the wagon reacts with an equal but opposite force.
