cm [012] newton's 3rd law

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THIRD LAWNewton’s


Newton’s Third Law of Motion

Law No. 3:

Whenever one body exerts a force F onto a second body, the second body exerts the force −F on the first body. F and −F are equal in magnitude and opposite in sense, that is:

𝑭𝑭𝟏𝟏𝟏𝟏 = − 𝑭𝑭𝟏𝟏𝟏𝟏

ACTION REACTION


Newton’s Third Law

When we are standing, our body weight is being transferred through our soles onto the floor below us. That we are being kept from falling through the floor is due to the fact that the floor is also exerting a reacting force on our soles. The reaction is exactly equal to our body weight to keep us in place.Our weight is counteracted by an opposite and equal reacting force or reaction, that is:

𝑭𝑭12 = - 𝑭𝑭21

Weight

Floor reaction

F12

- F21


Force involving StressIn this law, two opposing forces are involved. The application of force on an objects and the reaction force from the object is a complicated process involving the development of stress in the object. We shall deal with this matter when we come to examining the problem in a more microscopic level. Is suffices here to say that action and reaction is also a fundamental property momentum, the nature of which Newton did not give any further explanation.


MOMENTUMMOMENTUM

Momentum – Foundation to all 3 Laws

MOMENTUM EXCHANGE


But What is Momentum?

So momentum is the essence of motion.But what is momentum? Newton has a formulae for momentum. But he did not explain what momentum actually is.

Is it an imaginary entity? Is it something mathematically abstract? Or it is something solid?

Is what we have found only the tip of an iceberg of theoretical physics?


We have it. But we do not know what it is.

We have got it. But we do not know what it is. Not even Einstein can give us a clue.

May be we should now think out of the box and try to find some hints as to what it is.

Let us go to the oriental world to have a look at Kung Fu.


KUNG FUTo be continued on [CM013]:

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cm [012] newton's 3rd law

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