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tech / sci.physics.relativity / Two identical spheres of large mass difference, in still open air, fall at same time???

SubjectAuthor
* Two identical spheres of large mass difference, in still open air,beda pietanza
+* Re: Two identical spheres of large mass difference, in still openJules Scotti
|+- Re: Two identical spheres of large mass difference, in still openbeda pietanza
|+* Re: Two identical spheres of large mass difference, in still openProkaryotic Capase Homolog
||`- Re: Two identical spheres of large mass difference, in still openJules Scotti
|`* Re: Two identical spheres of large mass difference, in still openJules Scotti
| `- Re: Two identical spheres of large mass difference, in still openJules Scotti
+* Re: Two identical spheres of large mass difference, in still openProkaryotic Capase Homolog
|`* Re: Two identical spheres of large mass difference, in still openbeda pietanza
| `* Re: Two identical spheres of large mass difference, in still openProkaryotic Capase Homolog
|  `- Re: Two identical spheres of large mass difference, in still openJules Scotti
`- Re: Two identical spheres of large mass difference, in still openbeda pietanza

1
Two identical spheres of large mass difference, in still open air, fall at same time???

<b294cbdc-2347-4139-bfa8-3d3d6c96c345n@googlegroups.com>

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Subject: Two identical spheres of large mass difference, in still open air,
fall at same time???
From: bedapiet...@gmail.com (beda pietanza)
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 by: beda pietanza - Fri, 18 Nov 2022 16:23 UTC

Two identical spheres of large mass difference, in still open air, fall at same time??

If the acceleration of gravity is the same
if the friction depend only on the form of the body
then, two identical spheres, of large mass difference, should fall at same time,
also, in open still air on the Earth surface.
Agree????
(ignoring the infinitesimal effect of the different masses on the acceleration value)
cheers
beda

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<tl8cof$2vfv4$1@dont-email.me>

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From: ujs...@ocjssuis.os (Jules Scotti)
Newsgroups: sci.physics.relativity,sci.physics,sci.math
Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
Date: Fri, 18 Nov 2022 16:43:59 -0000 (UTC)
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 by: Jules Scotti - Fri, 18 Nov 2022 16:43 UTC

beda pietanza wrote:

> Two identical spheres of large mass difference, in still open air, fall
> at same time??
>
> If the acceleration of gravity is the same if the friction depend only
> on the form of the body then, two identical spheres, of large mass
> difference, should fall at same time, also, in open still air on the
> Earth surface. Agree????

> (ignoring the infinitesimal effect of the different masses on the
> acceleration value) cheers beda

you was about correct before the last paragraph. The masses makes no
difference on acceleration. That's constant, g. Try again.

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<eaea582d-636b-4355-a4e6-c31086409f88n@googlegroups.com>

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Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
From: prokaryo...@gmail.com (Prokaryotic Capase Homolog)
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 by: Prokaryotic Capase H - Fri, 18 Nov 2022 16:57 UTC

On Friday, November 18, 2022 at 10:23:28 AM UTC-6, bedapi...@gmail.com wrote:
> Two identical spheres of large mass difference, in still open air, fall at same time??
>
> If the acceleration of gravity is the same
> if the friction depend only on the form of the body
> then, two identical spheres, of large mass difference, should fall at same time,
> also, in open still air on the Earth surface.
> Agree????

No.
Compare a 3 cm soap bubble versus a 3 cm steel ball.
What point are you trying to make?
That certain members of this newsgroup (namely
yourself) can't work out a simple thought experiment?

Or do you know the answer and hope to catch somebody
answering this at 2 AM who maybe is drowsy and misreads
your scenario?

> (ignoring the infinitesimal effect of the different masses on the acceleration value)
> cheers
> beda

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<ad50b888-4921-4a4f-8131-3b882df6bd60n@googlegroups.com>

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Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
From: bedapiet...@gmail.com (beda pietanza)
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 by: beda pietanza - Fri, 18 Nov 2022 21:34 UTC

Il giorno venerdì 18 novembre 2022 alle 17:44:02 UTC+1 Jules Scotti ha scritto:
> beda pietanza wrote:
>
> > Two identical spheres of large mass difference, in still open air, fall
> > at same time??
> >
> > If the acceleration of gravity is the same if the friction depend only
> > on the form of the body then, two identical spheres, of large mass
> > difference, should fall at same time, also, in open still air on the
> > Earth surface. Agree????
>
> > (ignoring the infinitesimal effect of the different masses on the
> > acceleration value) cheers beda
> you was about correct before the last paragraph. The masses makes no
> difference on acceleration. That's constant, g. Try again.
beda:
prokaryotic seems to disagree,
I am not sure on what happens, maybe it better to set the two spheres
with precise diameter and weight, let say
the heavy one of 500 kg and the lighter one of 5 kg, same not deformable volume of .25 mt^3
in this case we are far from prokaryotic example, well maybe someone who knows better can help us.
cheers
beda

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<96e8e6cc-c819-4afb-bc2d-89fa4917806en@googlegroups.com>

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Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
From: bedapiet...@gmail.com (beda pietanza)
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 by: beda pietanza - Fri, 18 Nov 2022 21:47 UTC

Il giorno venerdì 18 novembre 2022 alle 17:57:52 UTC+1 prokaryotic.c....@gmail.com ha scritto:
> On Friday, November 18, 2022 at 10:23:28 AM UTC-6, bedapi...@gmail.com wrote:
> > Two identical spheres of large mass difference, in still open air, fall at same time??
> >
> > If the acceleration of gravity is the same
> > if the friction depend only on the form of the body
> > then, two identical spheres, of large mass difference, should fall at same time,
> > also, in open still air on the Earth surface.
> > Agree????
> No.
> Compare a 3 cm soap bubble versus a 3 cm steel ball.
> What point are you trying to make?
> That certain members of this newsgroup (namely
> yourself) can't work out a simple thought experiment?
>
> Or do you know the answer and hope to catch somebody
> answering this at 2 AM who maybe is drowsy and misreads
> your scenario?
> > (ignoring the infinitesimal effect of the different masses on the acceleration value)
BEDA
I really don't know the answer, I'm still thinking about, hope for help,
please look up to the Jules Scotti replay he seems of a different opinion than yours,
keep lurking
cheers
beda

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<578a66f7-22c2-4b49-b77c-82e82f500c1dn@googlegroups.com>

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Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
From: prokaryo...@gmail.com (Prokaryotic Capase Homolog)
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 by: Prokaryotic Capase H - Fri, 18 Nov 2022 22:03 UTC

On Friday, November 18, 2022 at 10:44:02 AM UTC-6, Jules Scotti wrote:
> beda pietanza wrote:
>
> > Two identical spheres of large mass difference, in still open air, fall
> > at same time??
> >
> > If the acceleration of gravity is the same if the friction depend only
> > on the form of the body then, two identical spheres, of large mass
> > difference, should fall at same time, also, in open still air on the
> > Earth surface. Agree????
>
> > (ignoring the infinitesimal effect of the different masses on the
> > acceleration value) cheers beda
> you was about correct before the last paragraph. The masses makes no
> difference on acceleration. That's constant, g. Try again.

Beda's scenario is for an experiment conducted in "still open air", not vacuum.

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<86b81a1a-b321-4c9a-b937-75b52853c312n@googlegroups.com>

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Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
From: prokaryo...@gmail.com (Prokaryotic Capase Homolog)
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 by: Prokaryotic Capase H - Fri, 18 Nov 2022 22:05 UTC

On Friday, November 18, 2022 at 3:47:26 PM UTC-6, bedapi...@gmail.com wrote:

> I really don't know the answer, I'm still thinking about, hope for help,
> please look up to the Jules Scotti replay he seems of a different opinion than yours,
> keep lurking
> cheers
> beda

Are you two really so clueless? Or are you two trolls,
merely wanting to waste our time?

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<tl8vkj$31c29$1@dont-email.me>

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From: ujs...@ocjssuis.os (Jules Scotti)
Newsgroups: sci.physics.relativity,sci.physics,sci.math
Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
Date: Fri, 18 Nov 2022 22:06:12 -0000 (UTC)
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 by: Jules Scotti - Fri, 18 Nov 2022 22:06 UTC

Prokaryotic Capase Homolog wrote:

> On Friday, November 18, 2022 at 10:44:02 AM UTC-6, Jules Scotti wrote:
>> beda pietanza wrote:
>>
>> > Two identical spheres of large mass difference, in still open air,
>> > fall at same time??
>> >
>> > If the acceleration of gravity is the same if the friction depend
>> > only on the form of the body then, two identical spheres, of large
>> > mass difference, should fall at same time, also, in open still air on
>> > the Earth surface. Agree????
>>
>> > (ignoring the infinitesimal effect of the different masses on the
>> > acceleration value) cheers beda
>> you was about correct before the last paragraph. The masses makes no
>> difference on acceleration. That's constant, g. Try again.
>
> Beda's scenario is for an experiment conducted in "still open air", not
> vacuum.

it's the same thing, Einstine, regarding the friction with air. I beg you
to reconsider.

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<tl8vrr$31c29$2@dont-email.me>

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https://www.novabbs.com/tech/article-flat.php?id=100601&group=sci.physics.relativity#100601

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From: ujs...@ocjssuis.os (Jules Scotti)
Newsgroups: sci.physics.relativity,sci.physics,sci.math
Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
Date: Fri, 18 Nov 2022 22:10:03 -0000 (UTC)
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 by: Jules Scotti - Fri, 18 Nov 2022 22:10 UTC

Prokaryotic Capase Homolog wrote:

> On Friday, November 18, 2022 at 3:47:26 PM UTC-6, bedapi...@gmail.com
> wrote:
>
>> I really don't know the answer, I'm still thinking about, hope for
>> help,
>> please look up to the Jules Scotti replay he seems of a different
>> opinion than yours,
>> keep lurking cheers beda
>
> Are you two really so clueless? Or are you two trolls,
> merely wanting to waste our time?

let's hear your story, I think I did a mistakes with the acting forces.
Let's hear. You seems deluded.

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<tla8ao$36v0u$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=100613&group=sci.physics.relativity#100613

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From: ujs...@ocjssuis.os (Jules Scotti)
Newsgroups: sci.physics.relativity,sci.physics,sci.math
Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
Date: Sat, 19 Nov 2022 09:40:41 -0000 (UTC)
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 by: Jules Scotti - Sat, 19 Nov 2022 09:40 UTC

Sergi o wrote:

>>> Two identical spheres of large mass difference, in still open air,
>>> fall at same time??
>>> If the acceleration of gravity is the same if the friction depend only
>>> on the form of the body then, two identical spheres, of large mass
>>> difference, should fall at same time, also, in open still air on the
>>> Earth surface. Agree????
>>> (ignoring the infinitesimal effect of the different masses on the
>>> acceleration value) cheers beda
>>
>> you was about correct before the last paragraph. The masses makes no
>> difference on acceleration. That's constant, g. Try again.
>
> the thickness of each sphere is 0.001mm one sphere is filled with
> hydrogen the other sphere is filled with IRON

you think it changes g?

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<e0debf98-fa4a-49cd-ba74-56c32fa3dac8n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=100626&group=sci.physics.relativity#100626

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Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
From: bedapiet...@gmail.com (beda pietanza)
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 by: beda pietanza - Sat, 19 Nov 2022 11:26 UTC

Il giorno venerdì 18 novembre 2022 alle 17:23:28 UTC+1 beda pietanza ha scritto:
> Two identical spheres of large mass difference, in still open air, fall at same time??
>
> If the acceleration of gravity is the same
> if the friction depend only on the form of the body
> then, two identical spheres, of large mass difference, should fall at same time,
> also, in open still air on the Earth surface.
> Agree????
> (ignoring the infinitesimal effect of the different masses on the acceleration value)
> cheers
> beda
in dreams came the solution,
finally I have figured out the logic answer:
two sphere of the same form and volume,
the lighter falls slower in all possible cases, why:
for any given identical falling velocity of two balls, there is identical antigravity force
exerted by the air friction, but this is subtracted to a different force acting on the mass by gravity.
So there is a moment in the falling trajectory of each sphere, when the two force (one due to gravity and one due to
air friction) will be identical and the single sphere will fall down at a steady velocity***note***
and this steady falling velocity is more for the heavier sphere than the lighter one.
So the heavier sphere falls to ground before the lighter, in all cases.
***note***
the air pressure difference and the gravity differences at different height, is neglected for their very infinitesimal
effects, that in any case would contribute to increase the difference in falling time
cheers and thanks for you paying attention, of course open to any further discussion,
cheers
beda

Re: Two identical spheres of large mass difference, in still open air, fall at same time???

<tlb38t$38vlv$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=100636&group=sci.physics.relativity#100636

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From: ujs...@ocjssuis.os (Jules Scotti)
Newsgroups: sci.physics.relativity,sci.physics,sci.math
Subject: Re: Two identical spheres of large mass difference, in still open
air, fall at same time???
Date: Sat, 19 Nov 2022 17:20:30 -0000 (UTC)
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 by: Jules Scotti - Sat, 19 Nov 2022 17:20 UTC

Sergi o wrote:

> On 11/19/2022 3:40 AM, Jules Scotti wrote:
>> Sergi o wrote:
>>
>>>>> Two identical spheres of large mass difference, in still open air,
>>>>> fall at same time??
>>>>> If the acceleration of gravity is the same if the friction depend
>>>>> only on the form of the body then, two identical spheres, of large
>>>>> mass difference, should fall at same time, also, in open still air
>>>>> on the Earth surface. Agree????
>>>>> (ignoring the infinitesimal effect of the different masses on the
>>>>> acceleration value) cheers beda
>>>>
>>>> you was about correct before the last paragraph. The masses makes no
>>>> difference on acceleration. That's constant, g. Try again.
>>>
>>> the thickness of each sphere is 0.001mm one sphere is filled with
>>> hydrogen the other sphere is filled with IRON
>>
>> you think it changes g?
>
> one goes up, the other goes down. Why?

nothing to do with g. You talk pressure and acting forces.

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