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kfcman289

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Aug 3, 2013
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In the equation P + 1/2ρv^2 + ρgy can someone exactly explain to me what P is? Is it the same P used in the absolute pressure equation P= Po + ρgy?

A lot of questions I have ask to find pressure using Bernoulli's principle, but will only use the P as answer, and not even take into consideration the ρgy term.
 

jetsfan1234

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In the equation P + 1/2ρv^2 + ρgy can someone exactly explain to me what P is? Is it the same P used in the absolute pressure equation P= Po + ρgy?

A lot of questions I have ask to find pressure using Bernoulli's principle, but will only use the P as answer, and not even take into consideration the ρgy term.
Yes it is the same P (pressure) in both equations. The first equation is used for fluid that is moving, the second simply removes the velocity term, and is used for stationary fluid.

pgy cancels out if both fluid points are at the same height ( diff in y=0)
 
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