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From: wugi <wugi@brol.invalid>
Newsgroups: sci.physics.research
Subject: Re: The SR between reality and appearance
Date: Wed, 10 Apr 2024 12:16:40 PDT
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Approved: Jonathan Thornburg [remove -color to reply]" <dr.j.thornburg@gmail-pink.com (sci.physics.research)
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Op 9/04/2024 om 13:42 schreef Luigi Fortunati:
> wugi il 09/04/2024 09:00:40 ha scritto:
>> Better back to your drawing board. Litterally.
>> Try to draw all intervening action/reaction pairs and check if you haven't sent some force to "nowhere" ;)
> 
> Here is the drawing:
> https://www.geogebra.org/m/tecb3dkw
> 
> For me, only the two blue and red forces act between man and the carousel; and nothing else.
> 
> For you?

So you've despatched the blue force to nowhere ;-)
It is not generated where you draw it, that's a transmitted reaction 
force (through the carousel's structure). It's generated in the 
foundation/anchor point(s, or areas, or volumes) of the carousel. After 
the red action force has been transmitted to those in the first place, 
of course.

If you consider initially only the red centrifugal force, and no 
foundations, then the carousel will tend to be accelerated along the 
(moving) centrifugal force, for lack of any basis for generating a 
reaction force.

So then, you have to count at least with Earth. Whether also with the 
rest of the Universe, that's a problem that even Mach couldn't solve in 
Principle, AFAIU.

-- 
guido wugi