Fluid Mechanics 1- How is the continuity principle relevant in the Bernoulli The

Question

Fluid Mechanics

1- How is the continuity principle relevant in the Bernoulli Theorem.

2- Convert static pressure head h, in meters of water to KPa. What equation will you use?

Problem 1- A twenty ton floor jack has a hydraulic piston with a 7 in diameter. If 60 pounds of force is being applied to the piston, please answer the following:

a) What is the pressure being exerted on the piston in psi?

b) If the diameter of the cylinder at the other end of the hydraulic jack to lift a car is 1 foot, how much force is can lift if pressure difference of oil height is negligible?

Explanation / Answer

Continuity equation is stating that discharge is constant at any point.

Bernoulli's equations station that sum of pressure head , velocity head and datum head are constant between any section.

Both the theorems are derived from momentum equation. Both are relevant in their principles as they are saying that energy inlet and energy outlet are equal.

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