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Newton's Laws

Question

What is the 3rd of Newton's laws?

2 years ago

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141 Replies

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R

Reginald Wisoky


141 Answers

D
Dilkush Panchani

To every action there is a reaction. These two forces act on different bodies. For example, when you are sitting on a chair the 'action' force is the weight of you and the chair. Since the 'reaction' force must act on a different body and the action force acts on the ground, the reaction force will act from the ground. In equilibrium the action force will always equal the reaction force. I hope this helped!

M
Miguel Alvarez Luque

For every action or force, there will always be a reaction or opposite and equal force

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For every action (force) there is an equal and opposite reaction.

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Tosin Sepo

All objects will stay in their original position or direction of movement unless and external force acts on it.

H
Hamdaan Sheikh

Formally known as; When Body A exerts a force upon Body B, Body B will exert an equal and opposite force upon Body A


A more commonly known phrase is; "every action has an equal and opposite reaction"

S
Shubhdeep Sethi

Every force has an equal and opposite reaction. (Easier way might be to think momentum is always conserved)

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Hi Reginald,


Newton's 3rd Law of Motion states that for every force there is an equal and opposite and force in nature.


This means that if there are to objects, object A and object B, and object A exerts a force of 60N on the right onto object B, then object B must exert an equal force of 60N in the opposite direction.

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Newton's Third Law of Motion states:

"For every action, there is an equal and opposite reaction."

This law means that if object A exerts a force on object B, then object B simultaneously exerts a force of equal magnitude in the opposite direction back on object A. The forces always occur in pairs, and they act on different objects. This law is fundamental to understanding the interactions between objects and plays a crucial role in explaining how objects move and interact in the universe.

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Falak Hussain

Every action has an equal and opposite reaction. So to speak, when you're standing on the ground, your weight pulls you downwards. At the same time, a force called the normal reaction force is pushing your weight upwards. The normal reaction force makes it so that you don't go through the ground. Weight is balanced with the normal reaction force. Hope that helps!

K
Karnika Singh

To every action, there is an equal and opposite reaction. This can be observed when you push yourself against a wall with your hand (apply an action), the wall pushes back on your hand with an equal and opposite force (instant reaction). Although the wall doesnโ€™t move, but the forces are still there. And you feel the force from the wall pushing back on your hand.

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Newtonโ€™s third law states that for every action there is an equal and opposite reaction. When 2 objects interact they exert equal and opposite forces on each other

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Jahanzeb Hassan

every force of action acting on an object receives an equal and opposite force

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The third law states that, a mass1 experiencing a contact force from a mass2, will generate a force of the same magnitude but with opposite direction of the original. In other words, if mass1 exerts a contact force on mass2, then mass2 will exert the same force on mass1.

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Newton's Third Law is often misunderstood. The statement is: "If one object exerts a force on another object, then that other object exerts an equal and opposite force on the first object." Sometimes this is mixed up with eg WEIGHT and REACTION (R) force. A good example is the Earth-Moon system. The Earth exerts a gravitational pull on the moon (it orbits the Earth!). The moon equally pulls the Earth with exactly the same force (we can see evidence of this in TIDES). At A level we see exactly this effect when Newtons Law of gravitation is explored using F = GM1M2/r^2. The force for the Earth and the Moon are the same!

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Newton's third law states that for every action, there is an equal and opposite reaction. If object A exerts a force on object B, object B also exerts an equal and opposite force on object A. In other words, forces result from interactions. To put this into perspective, a book lying on a desk has the action of resting on the desk, whereas the opposite and equal reaction is the surface of the desk ensuring the book is staying on it.

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