Torricelli's Theorem & Speed of Efflux, Bernoulli's Principle, Fluid Mechanics - Physics Problems

This physics fluid mechanics video tutorial provides a basic introduction into Torricelli's theorem which describes the speed of fluid that will leave a storage tank with a certain height. The speed of efflux can be calculated using a simple equation associated with Torricelli's law. The gravitational potential energy of the fluid at a height above ground level is converted to kinetic energy as the fluid exits the container. The formula can be derived using conservation of energy principles or using Bernoulli's principle. This video contains 2 examples / practice problems including a problem that asks you to find the efflux speed given the gauge pressure inside the top portion of the tank.
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How

[@apurba_boro]

Wow😂 really i came just becoz of class 11 physics... Btw i watched dr stone too😂

[@artb76]

Thank you, this tutorial was extremely helpful.

[@lanatomic8360]

I wouldn't be having a B in my STEM high school without you man, thank you so much!

[@jacksoncarter6352]

you are doing gods work

[@prabalsharma9199]

For the last question, why do we make the pressure inside the tank 5.5 atm? Is it because the equation only applies to atmospheric pressure which is the reason why we add 1 atm to 4.5 atm?

[@Asahel717]

Absolute pressure is the sum of atmospheric pressure and gauge pressure: 1 atm + 4.5 atm (gauge) = 5.5 atm. In psi, this would be 14.696 psi (1 atm) + 66.132 psig = 80.828 psia, where "a" = absolute.

[@h007]

We add that cuz tank is open so there will be extra pressure from atmosphere but when we close it we don't add 1 atm

[@edikanakpabio6583]

A true hero

[@gelomelo3426]

Thank you so much
It was amazing 👏

[@Attalla-t9b]

6:24 i thought it's sealed thooo, so usually we assume it's in a state of vacuum, right? And the only pressure present should've been just the gauge pressure..?

[@havallnooradeen1043]

thanks a lot sir

[@shibaneethakur5035]

Hey
How can you say p1=p2
Because area of hole is small than area of the upper part of open tank,so if area is different pressure must be different
(Taking about molecular force on the water molecule)

[@mewsicman9541]

That is because both area is exposed to atmosphere (atmospheric pressure). So their magnitude of pressure is the same. Hope this helps you at some point:>

[@shibaneethakur5035]

@@mewsicman9541 thank you

[@pydiappalaraju5533]

Thank you sir.

[@raininglavender]

so so helpful, best videos

[@grizzyprops8577]

Why we need to assume that both pressures are same?
It actually isn't

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You sound like young mark walhberg??!!!!!!!!!!!!

[@SWXSTXK]

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[@mehrdadmehrbakhsh4592]

very helpful,thank you so much.

[@mayflowerimpact]

For the last problem why would the pressure in the tank be 5.5 atm. The problem says the tank is sealed. Wouldn't that mean there would be no atmospheric pressure inside the tank?

[@raisinbam]

This could be wrong but it seems like you consider absolute pressure because if you consider gauge pressure in the tank, but absolute pressure at the outlet (1 atm), you’d be neglecting the effect of atmospheric pressure on the fluid inside the tank (the outlet is open).
In other words, to use the gauge pressure at the top of the fluid in the tank, you need to use the gauge pressure at the outlet, which would be 0 atm. Effectively, this would be the same thing he did.

[@ayushjangir273]

He was good man

[@rababhassani4468]

thank you o much for all the explanation
i am a medical student and i hope someone could explane to me one of the application of this theory in medecine
it s about the Torricelli-Bernouli sign in gastrointestinal stromal tumor necrosed with and ulcer within the lumen of the stomac

[@shashwatnandan5083]

Very nice video.

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[@BrofazoKouchom-xy5gf]

Sir pls how can we calculation the time when the water is discharged

[@fatimahrahim1369]

thankyou! you're a lifesaver

[@kingofyt666]

Thank u sir tomorrow is my 11 class final exam and this helped me really

[@pujiekaothie2005]

Wat is the use of torricelli's?

[@Rachitt-is-literally-amazingg]

This guy come in clutch. Every. Single. Time.

[@thabangnkopane4626]

The energy should transfer

[@gojostore.official]

v1 became zero because it is the initial speed of the particle? or im wrong, pls help

[@عبدالرحمنالشناوي-ص7ط]

Its not 0 its just too small to consider cause the large difference in A1, A2

[@shinydaniel2959]

hi

[@ZULFERISYAHPUTRA]

Dear Sir............Example Problem : One hydraulic cylinder, the end is connected to the Threaded rod so that it can be rotated. Cylinders with a bore size of 18 mm, 10 mm rod and a stroke of 300 mm single acting in a condition that is filled with oil. If the cylinder is rotated 10 mm.
a. How to calculate it
b. What is the gauge pressure

[@akashanand1329]

thank you

[@angoruzgohainbaruah4491]

Thanx Dude

[@gelomelo3426]

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[@twiringiyimanaemmanuel9742]

Thank you bro.tell me when i make three similar cylinders but using three liquids differ in both density and viscosity can i expect to came up with similar results of velocity. i spent 4 years without learning physics.

[@end6870]

TWIRINGIYIMANA Emmanuel
Bro I am suffering from this similar problem Since 1 yr

[@smileorcry7204]

Yes speed of efflux depends on height, not on type of liquid.you can experiment it .

[@nicolotraboni7862]

um... hi. i have a question. why does he multiply by 2 in 1:59?

[@santripti9772]

To remove the fraction

[@nicolotraboni7862]

@@santripti9772 oooh ok, thnx very much :D

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[@alexgutierrez6259]

Whats the difference between bernoullis equation and toricellis theorem

[@sbypasser819]

one of them is stolen

[@realbruh850]

toricellis is derived from bernoulli

[@khamchuck]

Asan loh