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From: Luigi Fortunati <fortunati.luigi@gmail.com>
Newsgroups: sci.physics.research
Subject: Re: Newton's 3rd law is wrong
Date: 2 Dec 2024 08:10:58 GMT
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I am not the first to say that Newton's third law is wrong.

Einstein said it before me (implicitly), with his General Relativity.

With my animation https://www.geogebra.org/m/v33hu4en I show what 
Newton said.

Its gravity corresponds to the sum of the ratios between the mass <M> 
(4) of the Earth and the mass <m> (2) of the Moon (numbers chosen for 
ease of exposition): every single particle of the Earth interacts with 
every single particle of the Moon, so that the total number (4) of the 
red forces exerted by the Earth on the Moon is exactly equal to that of 
the blue forces exerted by the Moon on the Earth (8 forces in total 
corresponding to the product of the masses Mxm 4x2).

For this reason, according to Newton, the action of the Earth on the 
Moon is perfectly equal and opposite to the reaction of the Moon on the 
Earth, as prescribed by the third law.

Instead, Einstein argues that there is no force between the particles 
of the Earth and those of the Moon, and that the action between the two 
bodies is due to the space-time curvature of one in contrast to the 
different space-time curvature of the other.

But the two curvatures are not equal!

And therefore, even for Einstein, the gravitational equality between 
the two opposing bodies no longer exists, except in the one case in 
which the two masses and the two curvatures are equal.

And never when they are different.

Luigi Fortunati