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

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

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Hydraulics and Fluid Mechanics in ME
Froude number is significant in

Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls
Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
All of the listed here
Supersonics, as with projectile and jet propulsion

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

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