A liquid flows with the same velocity through two pipes 1 and 2 having the same diameter. If the length of the second pipe be twice that of the first pipe, what should be the ratio of the head loss in the two pipes?

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Flow Through Pipes topics include: Pipes, hydraulic gradient, series and parallel pipes, nozzles flow, pipes water hammer and pipe network. In fluid mechanics, pipe flow is the movement of a liquid through a closed conduit, such as a pipe or tube.  The steady flow of an incompressible fluid in pipes is defined by two laws: Law of conservation of mass: (continuity equation) Principle of energy conservation: (Bernoulli equation)  The velocity of a fluid in a pipe changes from zero at the surface to a maximum at the pipe center. In incompressible flow, the average velocity remains constant... Show more

A liquid flows with the same velocity through two pipes 1 and 2 having the same diameter. If the length of the second pipe be twice that of the first pipe, what should be the ratio of the head loss in the two pipes?