What Does g Represent in the Fluid Mechanics Equation P = Patm + pgh?

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Homework Help Overview

The discussion revolves around the interpretation of variables in fluid mechanics equations, specifically focusing on the meaning of "g" in the equation P = Patm + pgh and the variable "V" in the buoyancy force equation F*b = pVg.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the meaning of "g" as gravitational acceleration and question its role in fluid mechanics. There is also a discussion about the variable "V" in relation to volume and buoyancy, with some uncertainty about the definitions of other variables like "p."

Discussion Status

Some participants have provided clarifications regarding the variables, suggesting that "g" represents gravitational acceleration and "V" likely refers to volume. However, there remains some ambiguity regarding the definitions of "p" and other terms, indicating an ongoing exploration of the concepts.

Contextual Notes

Participants express confusion about the context of the equations, with one noting that the topic may be more appropriate for an introductory physics course rather than precalculus. There is also a mention of specific members in the discussion, which has been advised against.

Bk8907
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In the equation

P = P *sub*atm + pgh

what is the "g"?

gravity due to earth??
 
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Yes, it is the gravitational acceleration experienced by the fluid (9.81 m/s^2 towards the ground).
 
Last edited:
THANK YOU SOO MUCH!
now i can finish my problem.

one more though...

in this equation for fluid mechanics...

F*sub*b = pVg

Is the V for volume? because I'm given the dimensions of a box floating on water and I have to figure out how much of it is under water
 
Having not done fluid mechanics the F_b may indicate to me the buoyancy or something? Maybe V is viscosity?

Is your p for momentum, or really a rho, for density? if so, the RHS of your equation can become mg, if v is volume.

But yea, really, this should be in Introductory Physics or something, not precalc math. And why does your title refer to arildno, he's not the only person who tries to help you know :P
 
V is most likely volume, so that Fb is the buoyancy force.
In the future, please do not refer to specific members in your title.
 

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