Re: I need someone's brain juice here?

I found the answer which is that they are BOTH THE VERY SAME...they
simply omitted minor forces from the equation (meaning they considered
the weight of the liquid as minimal for the press equation .... so they
omited it).

Better Manometer model at the very bottom of:

http://www.cartage.org.lb/en/themes/Sciences/Physics/Mechanics/FluidMechanics/Statics/Measurement/Measurement.htm

(they use z1&z2 instead of d1&d2 and show that bernouilli alone is
insufficient to determine their values, bernouilli determines the value
of z1+z2 (=h), you then need z1/z2 = Area2/Area1)



guskz@xxxxxxxxxxx wrote:
> Slightly off topic but the other newsgroups aren't as read....
>
> Here's two web links on two widely understood fluid pressure models:
>
> http://hyperphysics.phy-astr.gsu.edu/hbase/pman.html#meac
>
> http://hyperphysics.phy-astr.gsu.edu/hbase/pasc.html#hpress
>
>
> Both are related to vertical pressure (or Force / Area = pressure) on a
> fluid, yet both use 2 completely different equations to calculate the
> fluid's vertical travel distance.
>
> One use's the fluid's density the other simply says Work1 = Work2 thus
> F1*D1 = F2*D2
> (or P1*A1*D1 = P2*A2*D2) where as the other says P1 = density * H *
> gravity + P2
>
> If you look at both models you'll notice that H = D1+D2
>
>
> Anyone with enough brain juice to tell me why the difference, I can't
> figure it out since both models simply practically the same????

.