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From: Luigi Fortunati <fortunati.luigi@gmail.com>
Newsgroups: sci.physics.research
Subject: Re: The SR between reality and appearance
Date: 8 Apr 2024 06:54:36 GMT
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wugi il 04/04/2024 23:24:16 ha scritto:
>> I am so naive that I have always believed that the man on the in
>> movement carousel feels the rotational force of the carousel and not
>> that of the Earth + Universe.
>
> (A late one). He feels the reaction force by Earth+Universe upon the 
> carousel's rotational action, transmitted through the carousel's 
> foundation and its own stiffness.

What does the reaction force of the Earth+Universe to the rotating 
action of the carousel have to do with the man on the carousel?

The man on the spinning carousel acts-reacts only with the carousel, 
not with the Earth+Universe!

> Compare with the water in the bucket, which doesn't feel the bucket's 
> swinging action, but rather the reaction upon the bucket by the rope, by 
> the hand, by the person swinging the bucket around, by the floor 
> retaining his feet, by Earth, ...

Here too, the only force that the water in the bucket feels is the 
force of friction with the walls of the bucket and not that of the 
hands, the rope or the Earth+Universe.

Luigi Fortunati