In this article we discuss about, definition of Newton's third law of motion, Newton 's law of motion with examples in day to day life, Newton third’s law of motion solutions, action and reaction pairs with examples and solutions.
Newton’s third law of motion define as law of action and reaction. Law of action and reaction states that, for every action, there will be an equal and opposite reaction.
In this universe, when any force is applied on an object, that object will exert an equal amount of force but in the opposite direction to that applied force. A force is nothing but an action of pull or pushes that acts on an object by which it causes an interaction with another object.
Force between objects can be classified as
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Contact force happens when the two objects are having physical contact with each other. Examples of contact force are frictional force, air resistance, and tensional force.
Action at a distance force happens when the two objects do not have any physical contact with each other. Examples of action at a distance force are gravitational force, electrical force and magnetic force. When we jump on the ground even though your foot doesn’t touch the ground some gravitational force will appear on your feet by moving back to the ground.
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Action and reaction pair in Newton’s 3rd law
According to Newton’s third law there will be an equal and opposite reaction for any action. Consider an object A and object B interact with each other, by Newton’s third law these objects will exert force on one another.
This can be given with a mathematical expression as
Fa= - Fb
Here when object A exerts a force on another object B, then an equal amount of force will be exerted back on object A but in the opposite direction which is denoted with a minus (-) symbol.
Now we can illustrate the Action and reaction pair with an example.
Images of Newton's 3rd law of motion
Here the trampoline jumping trick shows Newton's third law of motion- action reaction pairs.
NCERT Physics Notes:
Action – the jumper jumps on trampoline, he exerts the force on trampoline
Reaction – the trampoline pushes the jumper up, the trampoline exerts the same force on the jumper making him move upwards.
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Day to day life examples with solution using Newton’s third law of motion/ third law of motion examples with solutions
Law of action and reaction examples in sports
Third law of motion examples in daily life is given below.
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Movement of air
Mutual interaction force
The bird swings the wing in downward direction to push the air downwards - action. Since the force occurs in mutual interaction the air will exert an equal amount of force on the wing but in opposite direction i.e upwards - reaction.
Newton’s third law of motion states that, For every action there will be an equal and opposite reaction.
When we sit on a chair, you will exert a downward force on the chair which is action. Similarly the chair will exert an upward force on you which is a reaction. These two forces are action and reaction pairs. So a pair of forces acts on objects which are interacting with each other.
Force between objects can be classified as
Contact force
Action at a distance
Contact force happens when the two objects are having physical contact with each other. Examples of contact force are frictional force, air resistance, and tensional force.
Action at a distance force happens when the two objects do not have any physical contact with each other. Examples of action at a distance force are gravitational force, electrical force and magnetic force.
Law of action and reaction.
Newton’s third law there will be an equal and opposite reaction for any action. Consider an object A and object B interact with each other, by Newton’s third law these objects will exert force on one another.
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