Hydraulics and Fluid Mechanics in ME
A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called

D-Alembert’s principle
Pascal’s law
None of these
Archimedes’s principle

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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
Supersonics, as with projectile and jet propulsion
All of the listed here
Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

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