Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is

π w ω² r³/4g
π w ω² r²/2g
π w ω² r⁴/4g
π w ω² r²/4g

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Hydraulics and Fluid Mechanics in ME
Surface tension

Is a function of the curvature of the interface
Acts in the plane of the interface normal to any line in the surface
Decreases with fall in temperature
Is also known as capillarity

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