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Gravitational Acceleration 2

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drawoh

drawoh

Mechanical
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I am trying to figure out an equation in an old engineering document.

Dynamic Head: H = 1/2 [ϱ] V2

The wacky looking Greek character is called ϱ in HTML, and \varrho in LaTeX, which I interpret to be a variation on the character roh,[ ][ρ]. The only thing that makes any sense to me is that...

[ϱ] = 1/g, where g is acceleration due to gravity.

Has anybody seen anyone do this? Have you done this anywhere?

--
JHG
 
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I've always thought of that as "rho" ... being mass density (in dimensions, M/L^3). Then together with V^2 (L^2/S^2) you get M/(L*S^2) or forcepressure. (oops)


another day in paradise, or is paradise one day closer ?
 
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Just fluid density for the equation for dynamic pressure. Someone must have like the shape of that character or thought it was more distinct from "p". By hand I use the curly version.
 
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