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swayne221b
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After being through with Newton's 3rd law of action reaction pairs, there arise a doubt regarding the categorization of force couple (related to torque) of being or NOT being an example of action reaction pairs.
That's the strong form of Newton's third law. The weak form does not require that condition. It merely requires that action-reaction pairs be equal but opposite.Simon Bridge said:Action-reaction pairs have the same line of action.
A force couple is a pair of forces that act on an object in opposite directions, causing the object to rotate around its center of mass. The forces in a force couple must be equal in magnitude and opposite in direction, but do not necessarily have to be applied at the same point on the object.
A single force applies an unbalanced force on an object, causing it to accelerate in the direction of the force. In contrast, a force couple creates a rotational force that causes an object to rotate without changing its overall motion.
Newton's third law states that for every action, there is an equal and opposite reaction. This means that when two objects interact, the forces they exert on each other are equal in magnitude and opposite in direction.
In a force couple, the two forces are equal and opposite in direction, meaning that they follow Newton's third law. This law explains why an object experiences a rotational force when two equal and opposite forces are applied to it.
No, according to Newton's third law, all forces must have an equal and opposite reaction. Therefore, a force couple cannot exist without following this law.