Re: The SR between reality and appearance

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