The Hydrostatic Paradox - Explained!
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- เผยแพร่เมื่อ 10 ก.พ. 2017
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One of the best science videos I've ever seen.
Indeed
Really, true ... I agree
this isn't a science video. science videos use the metric system
@@Sebastian-hg3xc
The grass isn’t wet.
The grass is wet when it rains.
Our professor of thermodynamics in the mechanical engineering department (Germany) suggested that we watch your video to understand the concept even more. Now I should thank you both :) Please feed us more of your bright work !
It is indeed a good brain teaser for thinking about conservation of energy. I love indisputable physical laws that intuitively feel at first like they break conservation. Knowing that fundamentally they cannot, teasing out why is always a great thought experiment. Definitely brain food for anyone studying thermodynamics.
@@amarissimus29 "A picture is worth a thousand words."
what was the answer on the angled one?
That is so awesome 👌 what a great compliment! She is amazing.
Katerina, please make more videos. Your talent at explaining counter-intuitive effects can be applied to many topics, and your presentation is a delight to watch. It's a powerful combination of a clear presentation and a counter-intuitive phenomenon.
I generally did not comment on even a good video but your way of explanation made me do this. Very lucid and comprehensive explanation including all application. Last time also I saw some video to get a clear picture of this paradox but was not that much good. I am feeling like this time nothing left in this concept. Your students must be the luckiest one. Please keep uploading... such type videos to let us feel lucky too.
Absolutely correct
I wuold add: a perfect english pronounciation. An ideal video for a CLIL lession
Hey there! Have you heard about sin? Basically, it is anything that is wrong that we do to upset God. Sin upsets God because He is Holy. Just like this( Imagine if you saw someone being robbed!) God does not like sin, and Heaven is His God's home. So imagine you are sinning and trying to enter into God's house! What happens is, you OWN'T end up in God's House! Basically, you end up in Satan's, the creature who is decieving souls into going to his house, hell, which will be his permanent residence in a few years, where he wants to take millions of souls including yours! There is no second chance when you gte into hell. It is jail, but aint no bail".
And that's why Jesus died. He died in our place, that we might just have a chance at life if we believed in Him.
Repent of your sins and believe in Him!.
Yes, so true!
Next time just type, "Hey babygirl..."
This is exactly the part of the explanation that is left out in our fluid mechanics 1 class. Thank you!
That's exactly why I did this! :)
Hey there! Have you heard about sin? Basically, it is anything that is wrong that we do to upset God. Sin upsets God because He is Holy. Just like this( Imagine if you saw someone being robbed!) God does not like sin, and Heaven is His God's home. So imagine you are sinning and trying to enter into God's house! What happens is, you OWN'T end up in God's House! Basically, you end up in Satan's, the creature who is decieving souls into going to his house, hell, which will be his permanent residence in a few years, where he wants to take millions of souls including yours! There is no second chance when you get into hell. It is jail, but ain't no bail".
And that's why Jesus died. He died in our place, that we might just have a chance at life if we believed in Him.
Repent of your sins and believe in Him!.
From my experience in college (u/g in IS aka MIS, MBA, and ~50% of law school) most of the professors do a "meh" job of presenting material. They could learn a *lot* from professors like her.
I get the impression that she would not mind if physics professors (including the ones who teach watered-down physical science to non-technical majors) were to copy and adapt her techniques.
@@Physics4Life Would you be alright with other professors copying and adapting your techniques?
You're right. This wasn't explained in "fluid mechanics 1 class". This was fully explained in basic high school physics.
"Why does an arrow go into something when a basketball doesn't? I don't understand. I need it explained to me in terms of celebrities stepping on me"
Gott im Himmel. We are doomed. Octopus for president.
A brilliant presentation. Educational and well metered. How refreshing to hear a lecture presented calmly with proper pauses in the dialogue rather than one long sentence delivered at high speed with all the full stops (periods) edited out as is common on TH-cam these days.
There is one important detail missing from the description, which I think will confuse many viewers: the cylinder pressing down on the scale is a sliding plunger. We are not "weighing" the entire container and the water within, but rather the pressure exerted by the sliding plunger. (Most of the weight of the apparatus is supported by the clamp holding it in place.)
Yes, the essence of the paradox cannot be fully understood without this important detail.
Every video I’ve seen about this paradox does not explain that. You assume they are weighing a flask and water. That would always be the same no matter the shape. If you put this on a scale, without supporting the flask, the weight would the same no matter the shape. Otherwise, every experiment would be different based whether you use a beaker or a flask and the size.
Some vessels could be the same volume but higher surface area so more weight overall ❤
So the sliding plunger is only directly weighing the column of water above it, right? My head just literally exploded. I'm exploding right now
@@TravisTellsTruths Same volume would mean the same weight.
Absolutely brilliant backed up with some excellent demonstrations. Thanks for taking the time to make this!
Not only what the content well organized, but her enunciation and steady pace make her easy to understand when English isn't your first language.
It may help to reduce the feeling of 'paradox' in the Hydrostatic Paradox if one remembers that there are several other basic ways of 'multiplying force', such as the lever, the screw, the pulley, and the gear-wheel. These all enable a relatively small application of force to achieve a great effect, e.g. using a small weight to lift a much larger weight. This is not magic: we are not getting something for nothing. There is a trade-off between the strength of the force generated as the 'output' and the distance over which the force of the 'input' has to be applied to achieve the effect. For example in the case of a lever of the standard kind (with the fulcrum between the force and the load), a force of one kilo can only lift a load of ten kilos by moving through ten times the distance. In the case of a hydraulic press and similar devices, the trade-off is between the distance through which the 'input' fluid moves as compared with the much smaller distance through which the 'working' end of the press moves in the same time.
Hey there! Have you heard about sin? Basically, it is anything that is wrong that we do to upset God. Sin upsets God because He is Holy. Just like this( Imagine if you saw someone being robbed!) God does not like sin, and Heaven is His God's home. So imagine you are sinning and trying to enter into God's house! What happens is, you OWN'T end up in God's House! Basically, you end up in Satan's, the creature who is decieving souls into going to his house, hell, which will be his permanent residence in a few years, where he wants to take millions of souls including yours! There is no second chance when you get into hell. It is jail, but aint no bail".
And that's why Jesus died. He died in our place, that we might just have a chance at life if we believed in Him.
Repent of your sins and believe in Him!.
Similarly, in the static case, in which the same 50g mass balances different volumes of water, the trade-off is accomplished by the extra work of lifting the water to a higher height.
This is exactly what I came to comment. I wish it had been mentioned while bending the aluminum bar. The intuitive explanation is trying to push on a door 12" from its hinge a distance of 1" vs trying to push a door 36" from its hinge for 3".
The same work is done, but the second method requires much less force.
Work = Force * Distance
@@GoodLifeMedicine But isn't it true though that all three vessels had water surfaces at same height, not different ones? and it is actually the key was the column height arethe same, not different? I guess I'm confused. I thought the lesson was the water being up to the same top level? thx sorry if wrong
@@jwgmail The professor did note leverage, noting that the press lever was giving I think a 4:1 advantage
this is the best way to explain fluid statics . thoroughly enjoyed it
Hey there! Have you heard about sin? Basically, it is anything that is wrong that we do to upset God. Sin upsets God because He is Holy. Just like this( Imagine if you saw someone being robbed!) God does not like sin, and Heaven is His God's home. So imagine you are sinning and trying to enter into God's house! What happens is, you OWN'T end up in God's House! Basically, you end up in Satan's, the creature who is decieving souls into going to his house, hell, which will be his permanent residence in a few years, where he wants to take millions of souls including yours! There is no second chance when you gte into hell. It is jail, but aint no bail".
And that's why Jesus died. He died in our place, that we might just have a chance at life if we believed in Him.
Repent of your sins and believe in Him!.
You have some of the most intuitive explanations on the net. Thank you and keep up the great work.
Your examples are great for understanding the concepts of pressure
Thanks very much. This was astonishing! You explained difficult concepts very clearly. Indeed, your are a super teacher!
Keep on doing this!
One of the best science videos I've ever seen.. Your examples are great for understanding the concepts of pressure.
The best way to explain hydrostatic paradox! Even though her way of talking is slow....it gives us time to get the idea into our brain....I appreciate her examples with different shapes of vessels containing same height of liquid...the last one may seem really tricky but if you look close to it...you can figure it out that even though the liquid tis not directly under it's base....as pressure act in every dirction...we can get the vertical liquid column in a zigzag way...thank you so much for uploding such a video...I learnt so many things....keep uploading...wish you the best.
this is an extremly amazing video. i´ve had very good physics teachers throughout my life but this is top level even amongst them. keep doing those videos.
Not sure how you did it, but you just taught me about 5 different things at once. Also, the lecturer is great to watch and listen to. Excellent stuff!
Finally, a great explanation on this topic!
Hope you continue doing videos in the future.
Such good content! Thanks for doing this, you deserve more attention
Wow, I do not say this lightly. This video just blew my mind. How did such basic physics escape me for so long? Excellent video, I am, of course, subscribed with notifications turned on, and thumbs up!
Such a perspicuously elucidated and well laid out video. Hoping you'll post more of these:)
Excellent explanations and descriptive analogies. Well done!
I am 64 years old where 40 I worked in Hi-Tech industry (currently architect of liDAR system). I am so glad to say that I enjoyed every minute of this video. There are several reasons: First I learned!! Your explanations are so clear and I feel i understand anything you said. Another important thing (which might look insignificant but for the rest of the world it is) your way of speaking (diction and articulation) enable people which english is not their mother tongue to understand every word. Please continue!! thank you very much .
Years ago I was introduced to these and many other laws of fluid dynamics and pressure through SCUBA diving. These really come into play when diving deep and become even more complex when diving deep at altitude. All that aside, I love your explanation here and how lead your students from the known to the unknown. Very well done!
Diving deep at altitude? Now that's a topic I've never seen discussed on TH-cam. I've only ever seen divers as folks who go in the ocean, but there are enormous structures built at altitude that would need divers at some point, I think of dams here. Thank you for that. I'm happy you learnt your lessons well enough to still be 'sucking oxygen' after all this time. Long may it be so.
I wonder if incidents of cetaceans stranding themselves is not owing to accidentally exceeding no-decompression bottom time.
Absolutely top class video, please make more!
The best explanation of the Pascal's principle paradox I've ever heard. Thank you a lot Madam.
This video made sense of a phenomena that I've been aware of for quite some years but never actually understood. Thank you for such a succinct and understandable explanation! 👍
I bet it also made sense to the 5 in the experimental deep sea Titan coffin!
Imagine how thick a heart a brontosaurus would have to have had.
a rough size would be about the size of an adult head .... imagine how much force that muscle would be exerting each and every pump
@@kaboom-zf2bl the human heart pumps about 19 kPa of pressure, we can assume if the brontosaurus heart is 2.3 times bigger than a human heart it pumps 2.3 times as much, meaning they pump at about 43.9 kPa of pressure.
@@Doofenshmirtz1088 consider a brontosaurus is 30 feet tall ... we are 6 feet .. so 5 times bigger ... taking the inch and half and increasing it drastically ... a giraffe at 11 feet is at 3inches ....so a 9nch muscle s expected or the size of an adult head at roughly 9inches
That's assuming a brontosaurus regularly held its neck up like a giraffe. If it only did so in short intervals, it could live with less blood pressure because its resting position is lower. Still far greater than a giraffe though!
Search _"How the Brain Limited the Size of Dinosaurs"_ for an article including the parameters of such a heart.
Once again, great video. You should show how to calculate the pressure from the 150 foot tube filled with water.
The pressure is 1800" w.c.
Which converts to 65 psig eh
As long as you use proper units, it is calculated as d*g*h, where d is the density of the fluid, g is acceleration of gravity, h is the height of the tube. If you use IS units (Meters, seconds, kilograms...) you need no further conversion. Else, you need some conversions.
And tbis is assuming the tube is large enough that capillary force doesn't become significant ( assuming the total volume is fixed at 1 liter, the height and cross sectional area would be inversely proprtiona) . Once the tube is small enough there would be no additional pressure in the flask.
absolutely fantastic video. I'd have loved to see something this well made regarding this topic years ago.
But better now than never :)
Thank you!
Crystal Clear explanation, while watching the video by itself is very pleasant the way it is made and presented by this lady. One would not expect that a subject like this could be so interesting
I used to design instruments for industrial use and there's specifications for water resistance. One was a spray hose but that required an equivalent fire-fighter 2 inch size (to large) or a depth of six feet (a large volume of water). What I used was to take a 50 gal drum 34 inches high, not tll enough. So I put a cover on it and screwed a 3ft 2in pipe in the fill hole and got my 6 feet deep of pressure to test my instrument.
What an elegant, non intimidating demonstration of Pascals laws.
Thank you.
Ms. Visnjic, thank you for sharing this video, which answered a question I had about aerostatics. I'm looking forward to using the principle and learning more.
A brilliant and very well presented explanation. Where were these when we needed them in school physics classes. Keep them coming 👍🙂
Great video, I also really appreciated the addition of biology into a physics video. It really shows that their is connection between the sciences, and it gave a great example of applied physics.
I totally love the reference to animals and the comparison. These days I reckon its pretty critical to help students realise connection to the natural world, rather than just mechanics.
Hey there! Have you heard about sin? Basically, it is anything that is wrong that we do to upset God. Sin upsets God because He is Holy. Just like this( Imagine if you saw someone being robbed!) God does not like sin, and Heaven is His God's home. So imagine you are sinning and trying to enter into God's house! What happens is, you OWN'T end up in God's House! Basically, you end up in Satan's, the creature who is decieving souls into going to his house, hell, which will be his permanent residence in a few years, where he wants to take millions of souls including yours! There is no second chance when you gte into hell. It is jail, but aint no bail".
And that's why Jesus died. He died in our place, that we might just have a chance at life if we believed in Him.
Repent of your sins and believe in Him!.
This was so well done I think I understand now. Thank you so much :D
Keep these coming!!!! You're a great presenter and speaker, Katrina!
Stimulatingly delightful video. Relearned, with better clarity, few 101 concepts, grateful for that. Appreciate the effort that went into its making, by the Professor and the entire team.
Forgive my pedantic quibble though; it took me some time to understand the weighing set-up. Dunces like me could benefit had the stopper and lower tube coupling been further elaborated.
Save for this petty nitpick, the video undoubtedly is purely edifying.
An application that comes to my mind is the use of surge tanks to relieve immediate pressure surges, like due to the closing of valves, somewhere in the pipping system, which by Pascal's law will be equally transmitted throughout the system.
This is a great video series to understand the laws of hydrostatics. It was fun to watch and wants me to grab a hose and barrel for further "research" :-). As it's addressed to a broad US audience, I understand the usage of units like psi, lbs and in². Nonetheless it could have been even better if you additionally had added the common SI units for your international audience.
Will do, for future videos!
Hey there! Have you heard about sin? Basically, it is anything that is wrong that we do to upset God. Sin upsets God because He is Holy. Just like this( Imagine if you saw someone being robbed!) God does not like sin, and Heaven is His God's home. So imagine you are sinning and trying to enter into God's house! What happens is, you OWN'T end up in God's House! Basically, you end up in Satan's, the creature who is decieving souls into going to his house, hell, which will be his permanent residence in a few years, where he wants to take millions of souls including yours! There is no second chance when you get into hell. It is jail, but aint no bail".
And that's why Jesus died. He died in our place, that we might just have a chance at life if we believed in Him.
Repent of your sins and believe in Him!.
We use FREEDOM UNITS, 'round here!🇺🇸✊🏻🗽🦅
@@neaworld3960 The wages of sin [i.e. death] increase expositionaley, when stacked on top one another! As apposed to the free gift of God's everlasting life! [IF?] you can believe?
@@stevemitz4740 hiii . I do suppose you mean that God cant save, however, He vcreated the universe, (which would not exist without a creator, and the evolutionary theory fails to prove the non existemce of a creator) im sure His Only Son's sacrificial death on a wooden cross where He took the wrath of God for you, because of sin, upon Himself. Do you know how much Jesus loves you? Neither angels, nor darkness can separate you from His bountious love towards you. GOD looks upon you with compassion, and me too, for though we " all have sinned and fallen short of (His Holy standard) the glory of God, God seeks to turn you back to Him. He loves you and created you to be happy, fruitful and joyous in communion with Him. Trust me.. if it were not for the love of God, i would not be telling you these things today, because naturally I am a mean-kinda gal and God Himself has poured His love into my heart. Añl He is asking you to do today is turn from your sin and to Him. He will be right there for you. He will never fail you. I know past relationships have failed you, but " [God] will never leave nor forsake thee". He won't fail, he won't walk out when things get bad, ; He will be there. Amd He has been threre your whole life. You just need to open the door [of your heart] to Him today.
I was just looking for the explanation of the sideway tube, and of course, it's the only one you leave out!!!
The explanation is simple. It is a combination of the previous two examples. The upper surface of the slanted tube exerts a downward force that adds weight and the lower surface exerts an upper force that reduces weight. If you apply the virtual volume concept (imagine a fluid mass reaching outside the surface to the level of the fluid) you will realize that the downward force is slightly bigger than the upward one. This is because the upper surface is slightly bigger than the upper ward force which means that an additional weight is applied precisely equal to the weight of the slanted volume of the fluid
Really profound explanation. Especially emphasizing on different ways to explain the problem makes it really easy to comprehend! Keep em coming (Baby).
Very clearly narrated and well explained. Thank you for this video and greetings from Scotland.
Very clear and lucid but my favorite bit was to introduce me to someone I had never heard of, Simon Stevin. One of those ridiculously brilliant people all the world ought to remember beside Kepler and Galileo.
Thank you for the amazing video. Just one question about the third container, we knew intuitively that the water will seep out and your explanation was based on this statement. If there was no column of water above the container the water would not have seeped out, could you please give a more detailed explanation on how is the pressure transmitteted from the vertical column of water to the rest of the container?
This is the best explanation of this topic. Cleared each doubt completely.
I am waiting for more videos from this channel.
So what's the pressure applied to the ground by an elephant in stilettos?
What colour stilettos?
Wonderful content and beautiful and historic demonstrations. Beautifully presented.
Mrs. Katerina, you are amazing. Thanks a lot for making this video. Indeed it is very informative.
for the slanted one, one of the sides exerts a reaction force down while the other up so the pressure would just be the same as the others at the same height?
As a free diver, you can really feel hydrostatic pressure once you dive down -30'. I'm not sure if I even hung out at -60' but at the negative 40'-50' range you really feel the hydrostatic pressure in your internals. On the bright side, If you want to look skinny, take a selfie at -60'.
Simple, direct, perfect. Congrats for this beuatiful video
Agreed, a very satisfying video overall. Clear and to the point, with good visuals.
@Physics4Life this video is awesome! I learned a lot. One thing I would appreciate though is if you could give a brief answer/explanation to your question about the slanted water tube mentioned at 7:48 of the video either in the description or here please.
I think it is because as the water is pushing against the walls of the slanted tube the vertical component of the pushing force increases the weight on top of the balance and so we need 50g weight to balance it even though most of the water is away from the stopper
Just an assumption tho😕
@@summerr0503 do you think that would happen in all tube like containers? Like if you had a silly straw like shape? Would the pressure only accumulate on the vertical axis of the water? And would the walls contain the weight like those in the examples?
@@alanbaraka9800 For tube of any shape the weighing machine will measure the weight acting directly on it, as for the pressure in any weird shaped tube need not be acting perpendicularly over the machine(as in the third case) so the weighing machine only measures the force generated by the vertical component of pressure exerted by the water, but the entire weight of water is indeed supported by the walls of the tube
@@summerr0503 interesting
Slanted water filled upto same vertical height will also lift only 50gm.
This is because..
Lifting up force by the lower surface of slanted glass is cancelling some of the pushing down force by the upper surface of slanted glass.
I have seen a turbine at a off-grid location that generates electricity powered by hydrostatic pressure. Water is ejected at great pressure from the bottom of a pipe that is laid in a stream bottom with its inlet some elevation above the outlet. The pipe must be made progressively thicker from top to bottom to hold the pressure.
What a great example of how engineers must account for the laws of pressure when designing the power plant. Thanks for sharing!
Excellent information and the manner in which you explained it. Great one, thanks a lot.
I'm a civil engineer, and when I used to design shutters to contain wet concrete, for example to form tall narrow walls, the builders on site used to ask me, 'why is the pressure so high? theres only a small amount of concrete going in'. I just used to say thats what the hydrostatic pressure calculations give me, but i couldnt quite answer exactly why. They used to think i was going over the top by putting in reinforced joists on the shutter panels to withstand the forces.
I'm glad I've finally found the answer to this question. I'll send the guys on site the link to this video next time they start questioning my formwork designs.
776 views?!? this video is legit! You'll be eating a million views for breakfast if you keep it up!
Yeah ! 😂,the Quality Of The Video Is On Point Too !
It's 2,81 kg/cm^2 :D You're welcome.
You: 1:06 "made the mistake of writing in Dutch not in the scientific language of Latin"
Me: "made the mistake of using imperial units instead using the scientific SI units" :D
1 mile = 1760 yards
1 km = 1000 meters
Correct me if I'm wrong.
Nevertheless it's a GREAT video.
OMG, best comment ever ;) I'm totally with you. It's not like imperial is bad and the end it's just a set of units and numbers that you learn as the kid and got used to it. What is bad is inconsistency that it produces. For example all electric and magnetic laws are based on SI International Measurement System with uses metric units (kilograms, meters). Volt is at the end (kg*m^2)/(A*s^3), ohm is at the end (kg*m^2)/(s^3*A^2). Not using metric system which is International Standard or using Imperial units mixed with metric (like wire resistance Ohm per feet, blaaahh) is a tumor on measurement consistency.
Best explanation of hydrostatic paradox I had ever come across!
i just discover this chanel , very clear and simply explained ! good work
Still Gisele. I have my reasons
As a geologist I learned that (fresh) water exerts a pressure of 0.433 pounds per square inch per foot. Therefore a tube 100 feet high would exert a pressure of 43.3 psi at its base, regardless of the diameter of the tube. This was critically important in assessing the weight of fluids needed to withhold fluid influxes in a borehole.
ya I really hate it when someone gets it all so wrong, but hay kept the kids quiet, and looked good. I had to thumbs down as soon as she said 75 ft head of water was 45 psi ???????WHAT
Direct and clear. Looking forward to more from this channel.
You gave me the whole answer for my research of an week. Thank you and thank you again...
Nice video but that imperial system gave me cancer
Did you get chemo therapy
dumbass
what is the answer to the question?????
Yeah! second this. I can understand the pressure in the other containers but the angled column seems as if it would be reacted against by the glass and not the lower plate, however this is not the case
@@sluggi95 If we try this experiment with manometer then there will be any difference in manomatric fluid??
Perfection at its BEST! THANKS FOR SHARING.
Awesome presentation! I really enjoyed that. Thank you!
very good video!
spanish subs please!!
That was truly an excellent presentation. Thank you
Nice work. Clear about facts and well presented
Crystal clear and concise. Very well done.
Thank you for this video. I had never enjoyed learning about this as much as I did today
I appreciate your well planned work ❤❤❤
What an excellent science video! And what a clear narrator!
I like that she talks like an adult. Compare to so many other channels where they uptalk and otherwise sounds like a child. This is very refreshing.
this is a really great video!
thanks for your work!
i've paused the radio program on Pascal i'm listening to, to see if some of his stuff was here on TH-cam.. i'm looking forward to getting back to the program but so pleased and grateful for this..
thankyou for sharing 🙂 x
This was very illuminating! Thanks :)
Honestly, the explanations was soo good. Although I'm just 15, I was able to understand it completely. I'm glad I'm a able to find your yt channel. Hope you become a million subscriber channel in the future and share your knowledge with many. Thanks a lot!
Great fluid mechanics vdo....please also add other vdos... This is what I commented on any of the vdo first time...really great work...
Excellent presentation.
Fantastic demonstration!
Amazing video, helped me a lot. Thank you for sharing
You're blowing my mind! Subscribed!
Excellent video and so very interesting!! Thank you so much!
This video is amazing!!!! I would love to see more videos from this channel
Very good explanation, thanks for the video.
Very well presented!
Thank you for the lesson!
It's really helpful!
seriously it is one of the best science videos I've ever seen.
I have never seen these particular practical experiments, wonderful
Great explanation! Clearly understood about the Hydrostatic Paradox and its solution.
Thank you @physics4life
as a physics teacher, I must say this was truly awesome and inspiring.
Keep up the good work!
Please keep making more videos ❤❤
Thanks a lot! Such comprehensive and clear explanation - I really appreciate it!
Excellent!!
As far as I know, the hydraulic lift (not the hydraulic jack) used to lift vehicles doesnt utilise the force multiplication effect. The cylinder piston under the vehicle is actually of lower area and is used to move the vehicle up over a longer distance. The larger area cylinder piston is the one where pressure is applied on a barrel of oil using an air compressor. It requires more force, but that is achieved using air. So it works on Pascal's principle, but contrary to what is commonly explained for the hydraulic lift, the car is not lifted by force amplification.
this was soooooo cool, you explained it so well that i understood something that i have been ponderin (just in my head from time to time) about from time to time ever since i know about myself