If action is always equal to the reaction


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If action is always equal to the reaction, Explain How a horse can pull a cart ???

Answered by admin @



According Newton's Third law of motion , For every action force there is an equal and opposite reaction force.
Action= -Reaction.
Action force is exerted by horse on cart when horse pulls the cart.
Reaction force which will be equal and opposite force will be exerted by the cart on the horse.
if we have a look at forces acting on horses, horse will exert action force on the ground by its feet where as reaction force exerted by ground on horse makes the horse move forward.
note:
Here frictional force plays a very important role.
frictional force should be more than action force.
Let F be the force applied by horse.
f = frictional force.
Fnet =F- f
where from Second law, Fnet = ma
so, ma= F-f
So acceleration will be produced . which makes the cart move

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