Hydraulics and Fluid Mechanics in ME
The fluid forces considered in the Navier Stokes equation are

pressure, viscous and turbulent
gravity, pressure and turbulent
gravity, viscous and turbulent
gravity, pressure and viscous

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure

Increases as the square of the radial distance
Decreases as the square of the radial distance
Varies as the square of the radial distance
Increases linearly as its radial distance

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Hydraulics and Fluid Mechanics in ME
A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is

zero
one-half its value when cylinder was full
cannot be predicted from the given data
one-fourth its value when cylinder was full

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Hydraulics and Fluid Mechanics in ME
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

(IG/x̅) - Ax̅
(IG/Ax̅) + x̅
(Ax̅/IG) + x̅
(IG/Ax̅) - x̅

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