Question
Download Solution PDFFor a static fluid, the increase of pressure at any point inside the fluid, in a vertically downward direction, must be equal to the product of the ________ of the fluid and depth from the free surface.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Hydrostatic law:
The pressure at any point in a static fluid is obtained by Hydro-static law which is given by -
\(\frac{dP}{dz}=-ρ{g}\)
∴ P = -ρgz
∴ P = ρgh
where P = pressure above atmospheric pressure and h = height of the point from the free surface.
Specific Weight is the weight of a substance per unit volume.
Specific weight, w = \(\frac{{{\rm{\;mg}}}}{{\rm{V}}}{\rm{\;or\;\rho g\;}}\)
where, m = mass, V = Volume
∴ the correct answer is specific weight.
Last updated on May 28, 2025
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