Absolute Pressure vs Gauge Pressure - Fluid Mechanics - Physics Problems

This physics video tutorial provides a basic introduction into absolute pressure and gauge pressure. The gauge pressure is the difference between the absolute pressure and the atmospheric pressure. A positive gauge pressure means the absolute pressure is above the atmospheric pressure. A negative gauge pressure means the absolute pressure is less than the atmospheric pressure. This fluid mechanics video contains plenty of practice problems. This video explains how to calculate the gauge pressure of a two fluid mixture such as oil and water.

Volume Unit Conversion:

Specific Gravity & Density of Mixtures:

Will It Sink or Float?

Intro to Pressure & Fluids:

Atmospheric Pressure Problems:

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The Gallon Crusher:

Absolute Pressure Vs Gauge Pressure:

Water Pressure Vs Gauge Pressure:

Pascal's Principle - Hydraulic Lift System:

Mercury Barometer Problems:

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Open Tube Manometer:

U Tube Manometers:

Archimedes Principle & Buoyant Force:

Full-Length Videos and Worksheets:

Physics PDF Worksheets:

[neilbergin]

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[Nqobani]

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[veqrite]

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[TheChesireMouse]

yo, that's not a diver. That's definitely a corpse.

(Amazingly helpful video as always)

[faisal]

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[anniewang]

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and now again in university.

[ElPong]

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[Zua]

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[marrlllsss]

saving students academics, one video at a time ❤

[andrewzeppy]

So helpful 😇 may please do for me this : A wooden cylinder with cross-section area of 50 cm^2 floats in water. The visible part of the cylinder is 8 cm. 1. Using Archimedes' principle derive the following equation for a partially submerged cylinder (height of the cylinder / height of the cylinder below fluid surface = density of fluid /density of object)
2. Determine the height of the cylinder below the water surface using equation in 1.
3. Determine the weight of the cylinder.

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[rainbo]

hello sir! thank you for this simple yet understandable tutorial :) i have a question though, when an object is just at sea level (say, an automobile tire with given 24.2 psi) do i still need to convert the given gauge pressure to absolute?

[claireamba]

It is a well-explained tutorial. I now understand the basics. Thank you.

[memangibloyoustraightaway]

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Best explanation.
This channel is very helpful to students such as myself.

Keep it coming brother

[christianoglow]

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[andreamasky]

For Question 5. How did you know Gauge pressure was using the oil and not the water? Is it because the oil is in contact with the atmosphere and the water isn't?

[bottleofwater]

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[sarcadistic]

oh gosh I finally understood the concept thanks to you!