pressure in liquid

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Pressure in liquid

consider a surface area A in a liquid at a depth h. the force acting on the surface will be the weight W of the liquid above the surface. if ῥ is the density of the liquid and m is the mass of the liquid above the surface then

mass of the liquid cylinder = volume x density

= (Axh) x ῥ

force acting on the surface on area A = w= mg

= Ahpg

p= f/a

ahpg/A

P = pgh