The _____ is the elevation needed for a fluid to reach the velocity during frictionless free fall.Group of answer choicespressure head, P/ρgresistance head, hLelevation head, zvelocity head, V^2/2
Question
The _____ is the elevation needed for a fluid to reach the velocity during frictionless free fall.Group of answer choicespressure head, P/ρgresistance head, hLelevation head, zvelocity head, V^2/2
Solution
The correct answer is the velocity head, V^2/2g. This is because the velocity head is the term used in fluid dynamics to represent the kinetic energy of the fluid due to its motion at a certain velocity. It is the height in feet (or meters) that a flowing fluid would rise in a column if all of its kinetic energy were converted to potential energy, or elevation. Hence, it is the elevation needed for a fluid to reach the velocity during frictionless free fall.
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fluid mechanics
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