Question

derive the expression p = hpg.

Answer 1

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Answer 2

P = Force / Area

= (mass × acceleration) / Area

# From, Density=mass/volume

Mass = Density × Volume

Therefore,

P =(Density×Volume×Acceleration)/area

# From , Volume = Area × Length

P=(p×A×L×a) / A

Therefore,

P = L p a

When,L= Height (h) & a = Gravitational Acceleration (g)

P = h p g

By Vethum Hewage