Bulk Modulus of Elasticity and Compressibility - Fluid Mechanics - Physics Practice Problems

This physics video tutorial explains how to solve problems associated with the bulk modulus of materials. The bulk modulus is the ratio of bulk stress and bulk strain. The bulk stress is the ratio of force and area which is equivalent to the pressure exerted by a fluid. The bulk strain is the ratio of the change in volume to the original volume. Whenever you place an object in a fluid, the volume of the object decreases due to the pressure exerted by tge fluid from all sides. The amount by which the volume decreases depends on the bulk modulus of elasticity of the material. As the bulk modulus increases, the compressibility of the material decreases. Gases have a high compressibility factor and a low bulk modulus value for example. This video contains 1 practice problem on bulk modulus and fluid mechanics with all of the equations and formulas needed to solve it.

Static Equilibrium:

Elasticity and Hooke's Law:

Tensile Stress:

Elastic Modulus:

___________________________
Volume Unit Conversion:

Specific Gravity & Density of Mixtures:

Will It Sink or Float?

Intro to Pressure & Fluids:

Atmospheric Pressure Problems:

____________________________
The Gallon Crusher:

Absolute Pressure Vs Gauge Pressure:

Water Pressure Vs Gauge Pressure:

Full-Length Videos and Worksheets:

Physics PDF Worksheets:

[soupysoup]

Now this makes sense how the bottled water, sprays, any sorta gasses/fluids work in the real life application and why you can have a submarine at the bottom of an ocean. Thanks a ton, man. You grow us so many braincells that way.

[meow]

Dude he's super hero... Like he know everything!
The physics, the bio, the chemistry, really hatts off to you sir..!

Thank you

[maheshiwasundara]

You're explaining this bulk modulus theory very well and clearly. This is so much helpful. Keep up your good effort.

[eshabhowmick]

Why don't you put negative sign on the result of bulk strain??

[leabelarmino]

Heyyyy can you do something like problem solving? Because at my school it has lots of them. It would be very helpful for me to know the terms that are used to identify the given (bc I'm having a hard time on it). Thank you so much 😅

[hi.]

i have a question. since the delta v is vf-v0, and since we know that that results to a negative value because, if the volume decreases, vf<v0, why is it necessary to put the negative value to the side of it? hehe

[athenkosinelani]

Thanks a lot your videos are really helpful

[zanekhpsa]

May god bless you with everything you desire in life @organic chemistry tutor

[allenchristianchua]

How do you derive the formula to find the original volume, given the bulk modulus, change in volume and bulk stress

[scariestshepherd]

man icl lie your videos really help alot...just gained a subscriber

[James-okzo]

Wouldn't the change in pressure be 149 atm? Before falling into the sea, it would already have an existing pressure of 1 atm. Initial Pressure being 101.3 KPa and Final Pressure 15195 KPa. Thus change in P being 15093.7 KPa (149 atm)? Great video nonetheless.

[solomonaboagye]

Why was the negative sign in the change in volume in bulk strain not maintained for the the compressive force as well since they are all depressions.

[manishnrmk]

explained briefly and neatly brooo....

[surajsingh-ygyw]

In Pascale's law in a fluid every point inside fluid gets exerted force from all directions.. Why all forces are not balanced each other????

[mugabohassan]

Hey good evening how dobl get an equation of compressibility. C= 1/K

[dilan]

I would like to ask why the value of Strain is positive? If the formula for the
Strain= -Change in Volume/Initial Volume

[krissandrew]

Plss i am confused
How did they get d formular??

[krissandrew]

Break dwn on how d formular is being derived

[abelbekele]

T/r you are perfect and keep it up.

How I pay from Ethiopia to register?

[Cherub-]

Hello, blogger! I have focused on your channal for a long time and I have a small but vital problem after watching this video. It is related to the fomula that used to calculate the delta volumn of an object that under the surface of the water. In this fomula, there is a P, and you call it pressure. The question is that this pressure refers to the pressure on the top of the object or the bottom of the object if the object is so large (but compressible) that the change of the height is not negligible. Anyone can answer my question if you understand what I mean and have a relative correct comprehension and solution of my question. Thanks !