Hydraulics and Fluid Mechanics in ME
The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)

Q = Cd × b (H2 - H1) × √(2gh)
Q = Cd × bH2 × √(2gh)
Q = Cd × bH × √(2gh)
Q = Cd × bH₁ × √(2gh)

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

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