According to this law,
to every action, there is an equal and opposite reaction. When an object, say
A, exert a force (action) on another object, say B, then B also exerts a force
(reaction) on the A. These two forces are always equal in magnitude but
opposite in direction.
As shown in the
above figure, if the force exerted by
body A on B andis the force exerted
by B on A, then according to Newton's third law,
on A by B = - Force on B by A
Reaction = - Action
This law clarifies
that a single force can never exist and that the forces always exist in pairs.
The two opposing forces are known as action and reaction. The forces of action
and reaction always act on two different bodies.
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