Question

derive P=hpg say answer please ​

Answer 1

Answer:

Let    Mass = M

         Density = p

         Height = h

          Area = A

          Force = F

          Acceleration = a

          Acceleration due to gravity = g

          Volume = V

Pressure is Force per Unit Area. So,

$P=\frac{F}{A}$

$P=\frac{Mg}{A}$                           $[F=Ma; here, a=g. So, F=Mg]$

$P=\frac{pVg}{A}$                          $[Density=\frac{Mass}{Volume}; p=\frac{M}{V}; M=pV]$

$P=pg\frac{V}{A}$                        

$P=pgh$                          $[Area * Height = Volume; A*h=V; h=\frac{V}{A}]$