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From: Luigi Fortunati <fortunati.luigi@gmail.com>
Newsgroups: sci.physics.research
Subject: Re: Gravitational mass and inertial mass
Date: 19 Apr 2024 10:52:59 GMT
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Il 03/04/2024 08:58, Luigi Fortunati ha scritto:
> Luigi Fortunati il 22/02/2024 02:49:45 ha scritto:
>> In my animation https://www.geogebra.org/m/kqjzk5gt there are the two bodies A and B (of equal mass m) connected via an inextensible wire, ideally massless.
>> [[Mod. note -- This system is known as "Atwood's machine"; see
>>    https://en.wikipedia.org/wiki/Atwood_machine
>> for more information.
>> -- jt]]
> 
> My animation is not Atwood_machine because only body A moves vertically, while body B slides horizontally on a frictionless plane.
> 
>> And what is the ratio between the blue force FA=mg (gravitational + inertial) and the red force FB (inertial only)?
> 
> It turns out to me that FB=FA(mB/(mA+mB))
> 
> In our case where mA=mB=m, the force FB is FB=1/2 of FA.

In my animation, the string AB receives the blue force FA=mg from body A 
and transmits it to point B of body B.

However, the black force -FB that the string transmits to body B is only 
half the force it received at point A.

What happened to the force that was lost? Where is the error in the 
animation or in the reasoning I did?

Luigi Fortunati