# Where is the point of application of the Acsimet force ?

Do you know what the force Acsimet is ? Yes, certainly. Do you know Where the point of application of that force ? Yes, I think. But I don't :-(. Can you show me and explain your answer for me ? You can say it's the centre of gravity of the object... but WHY ?

Thank you !

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I am embarassed to admit that I DON'T know what "acsimet" means, much less what an "acsimet force" is! I do know that, as far as straight line motion is concerned, wherever the actual forces apply to a mass, we can treat the TOTAL force as if it were applied to the "center of mass"- basically, that the definition of center of gravity.

If forces are not "balanced" around the center of mass, the will be a rotation that a force applied to the center of gravity would not cause.

Originally posted by HallsofIvy
I am embarassed to admit that I DON'T know what "acsimet" means, much less what an "acsimet force" is! I do know that, as far as straight line motion is concerned, wherever the actual forces apply to a mass, we can treat the TOTAL force as if it were applied to the "center of mass"- basically, that the definition of center of gravity.

If forces are not "balanced" around the center of mass, the will be a rotation that a force applied to the center of gravity would not cause.

Well, Acsimet force is the force applying on an object in a liquid (such as water, oil, etc). The intensity : F=V.Gamma
where
V-volume of the part in water of object
Gamma-specific weight of the liquid

In the case where the object in the lique is liberal (not linked to anything who is n't in the lique), I'm agree too with you about the reason why the force acsimet applying at the centre of gavity, if not the rotation is obvious.
But there 're the others cases, you can click on this link for an example:

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arcnets
pkh,
I think by 'Acsimet' you mean 'Archimedes', and what you're looking for is the point of application of the buoyant force, which is the center of volume of the submerged part, see here:

http://web.nps.navy.mil/~me/tsse/NavArchWeb/1/module4/basics.htm [Broken]

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Originally posted by arcnets
pkh,
I think by 'Acsimet' you mean 'Archimedes', and what you're looking for is the point of application of the buoyant force, which is the center of volume of the submerged part, see here:

http://web.nps.navy.mil/~me/tsse/NavArchWeb/1/module4/basics.htm [Broken]

Well, I made a mistake with "Archimedes" . Thank you for the link .

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Originally posted by arcnets
pkh,
I think by 'Acsimet' you mean 'Archimedes', and what you're looking for is the point of application of the buoyant force, which is the center of volume of the submerged part, see here:

http://web.nps.navy.mil/~me/tsse/NavArchWeb/1/module4/basics.htm [Broken]

I read all but the object in the explanation is libre (it has no link with the other object which aren't in the water). Moreover, I don't understand the symbol of triangular shape. What does it mean, that mathematical symbol ?

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arcnets: Thank you VERY much for the clearing up the "Archimedes". It was clear that PKS's native language was not English (you should try to read my French!) and that one stumped me.

PKS: There are links at the site: the "dots" on the left (although unlabeled) are links to other "pages" of the document. I didn't see any triangular mathematical symbol. At the end, there is a triangle inside a disk which is clearly a "next page" link.

Originally posted by HallsofIvy
arcnets: Thank you VERY much for the clearing up the "Archimedes". It was clear that PKS's native language was not English (you should try to read my French!) and that one stumped me.

PKS: There are links at the site: the "dots" on the left (although unlabeled) are links to other "pages" of the document. I didn't see any triangular mathematical symbol. At the end, there is a triangle inside a disk which is clearly a "next page" link.

Rehi ;-),
Yes, you're right, I'm not english but I'm not french too (although I can use both of those 2 languages) :-).
And the symbol which I don't understand, you can see here
.http://web.nps.navy.mil/~me/tsse/NavArchWeb/1/module4/equilibrium_stability_files/image002.jpg [Broken]
P.S: My nickname is PKH, not PKS .

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meister
That stands for the gradient. The partial derivative of the components of the vector p.