I think when the water hits your hand, it has to do with the impulse momentum theory. Where the short amount of time of impact causes a large reaction force, considering the velocity of water is high before the impact. What an intuitive content!
The thing is pressure or energy is always constant, when fluid accelerate due to narrow passage its static pressure is decreasing which is felt on the wall of the passage and kinetic pressure is increasing, Overall all pressure is static pressure + dynamic (kinetic pressure) remains constant.
While the molecules in a fluid are constantly vibrating and jostling around, the average distance between them tends to increase when the flow speed increases. This is especially true in the scenario described by Bernoulli's principle where a fluid is flowing through a pipe with a changing cross-sectional area. Here's a more detailed explanation: Constant Speed: In a region of constant cross-sectional area and constant flow speed, the molecules maintain an average distance due to the balance between their kinetic energy (related to their motion) and the intermolecular forces (the forces that attract or repel molecules from each other). Narrowing Pipe (Increasing Speed): When the pipe narrows, the fluid is forced to speed up to maintain the same volume flow rate. This means the molecules gain kinetic energy. Source icon Source icon Increased Spacing: As the molecules move faster, they tend to spend less time close to each other and more time further apart. This results in an increase in the average distance between them. The increased spacing means fewer collisions between molecules, which leads to a decrease in pressure. Source icon Important Note: This increase in average spacing is more significant in gases than in liquids. Liquids are much denser than gases, and their molecules are already closely packed together. So while the average spacing might increase slightly in a faster-moving liquid, it's not as noticeable as in a gas.
It is no intuitive if not outright wrong that somehow increasing velocity results in a larger average distance between molecules. Where did you derive this drivel ?!
@@MathCuriousity It's wrong. In subsonic flow, normally below around 0.3 Mach, the flow is typically treated as incompressible. Above that speed, the flow can compress, and the molecules will therefore get closer together, not further apart, as the speed increases.
What you said doesn't seem entirely correct. For example, for the same straight pipeline, we can make the fluid flow through the pipeline at different speeds, but the pressure in the pipeline is the same. This indicates that under the same pressure (such as atmospheric pressure), the velocity of the fluid can be different. The correct explanation for the phenomenon in your video is as follows: due to the narrowing of the pipeline, the flow is obstructed, resulting in an increase in fluid pressure, and as a result of the increase in pressure, the downstream velocity of the pipeline increases. For example, winds moving at high speeds on Earth can be at one atmosphere, and winds moving at low speeds can also be at one atmosphere.
@@enbinzheng-line >> The correct explanation for the phenomenon in your video is as follows... Nope. The increase in velocity in a narrowing pipe is simply due to conservation of mass in an incompressible fluid.
I know it's impossible to cover everything in one minute, but I thought I'd mention the bit about it feeling like more pressure when it hits your hand... The Bernoulli effect applies to fluids that we're not doing any work on. And on such flows, the "total pressure" remains constant. This is possible because the static pressure goes down and the dynamic pressure goes up when the fluid accelerates. The static pressure is what you'd measure if you were moving along inside the fluid. The dynamic pressure is what you feel when it hits your hand.
Wow the author should have mentioned this! Also may I ask you a question: what if we used a FUNNEL where every point compared to another point is decreasing in cross sectional area right to the end?
@@MathCuriousity I'm not entirely sure I understand the question, but in the subsonic region, the flow would continue to accelerate as the funnel narrows. The static pressure would continue to decrease, and the dynamic pressure would continue to increase. But you hit a limit at the speed of sound. The flow can exit the funnel at the speed of sound, but no faster. Things really get weird on the other side. Let's put a couple of funnels tip-to-tip. So the flow is speeding up as the first funnel narrows. We get it right to sonic as it hits the other funnels nozzle and begins to expand again (this is called the choke point). But instead of slowing down as it would in subsonic flow, it will continue to speed up into the supersonic range (assuming low enough pressure). But it will ultimately reach a point (depending on pressure) where it can no longer sustain this acceleration, and will then form a standing shock wave in the diffusing funnel. Going into the shock wave you have supersonic flow, and immediately on the other side, coming out of the shock wave, you have subsonic flow. What's perhaps even more bizarre is that the higher the speed of the supersonic flow going into the shock wave, the lower the speed of the subsonic flow coming out of the shock wave.
I believe while the pressure might be lower either at the walls of the channel or between fluid molecules, its a misconception that pressure is less in the forward direction. A good way to understand what I mean is, if you placed a detector in the front of your water faucet and shrunk the size of the hole the water has to exit, the detector will most definitely read more pressure since the water gouging out has more force applied towards that direction
What you're describing is what he touches on at the very end. Here's the short story... What we normally call the "total pressure" is the sum of the static and dynamic pressure. When we accelerate or decelerate the fluid, without doing work on it, the total pressure remains constant. This means that accelerating flow is experiencing a reduction in static pressure and an increase in dynamic pressure. The static pressure is what you'd measure with an absolute pressure gauge if you were traveling along with the fluid. The dynamic pressure is what you feel when it hits your hand.
What you said doesn't seem entirely correct. For example, for the same straight pipeline, we can make the fluid flow through the pipeline at different speeds, but the pressure in the pipeline is the same. This indicates that under the same pressure (such as atmospheric pressure), the velocity of the fluid can be different. The correct explanation for the phenomenon in your video is as follows: due to the narrowing of the pipeline, the flow is obstructed, resulting in an increase in fluid pressure, and as a result of the increase in pressure, the downstream velocity of the pipeline increases. For example, winds moving at high speeds on Earth can be at one atmosphere, and winds moving at low speeds can also be at one atmosphere.
At a molecular level, faster molecules have fewer "bounces" against the container walls (= lower pressure) since they're traveling a greater distance parallel to the walls.
haha, very cool thanks, i had a misconception that pressure is just like force but turns out it is different...(it acts equally on all directions.. therefore a scalar quantity because no need of direction here)
But how do we know the velocity is constant before the bottleneck narrowing ? It seems you somehow knew the velocity was constant because you somehow knew the acceleration was 0 before the bottleneck but how?
what if the we reverse the pipe diameter, where the flow is going from smaller diameter to larger diameter, assuming A to be smaller diameter section of the pipe and B to be larger diameter section of the pipe, in that case if we apply the same concept from the video, there is net force from A to B therefore pressure should be larger in B side of the pipe than A, which is not true, hence I think its better to see it from total energy way than the video.
I am a dumdum and have a question: How does the pressure change if the liquid goes through a squeeze, speeding up and then entering a larger void. In my heads logic it will keep the pressure of the tighter area and reduce speed again, right?
But why velocity increased when diameter decreased? I mean I know area decreases, continuity of flow rate says velocity should increase… but from physics from point of view, why velocity is increased when diameter is decreased? Why can’t flow slow down when area is decreased and thereby increasing the pressure back in the upstream side?
Pressure is concentration of force. It is due to random movement of molecules causing collisions among themselves and also colliding to the wall of the container. These collisions are not not perfectly elastic which means they transmit some of their kinetic energy to wall also. If u ask why molecules move in random, it's again due to thermal energy. Theoretically absolute zero kelvin is where even the gluons inside quarks stop moving. But we are at 298k Or 25°Celsius which means every molecules around us and that made us all are in continuous motion. These motions can be moving the molecules across the space or just rotating motions without changing its co ordinates. The motion that cause changes in position is that responsible to transfer energy to other molecules and that is what HEAT. Due to this the water molecules also move in random motion. But we using a motor give them a way and energy to reach the desired location for using them. The MOTOR PUMP generates energy by electricity and this energy is used to create negative pressure and pull water to tanks located on top of buildings. Now another motor will push these water into pipe. Pressure in the fluid is different from pressure exerted by the fluid. Pressure in the fluid: measure of force exerted by moving column of fluid on its wall. More dense fluid, more molecules, more pressure. Very fast moving means molecules will be having their velocity vectors majorly in the direction of flow, that implies there collision on the wall decreases and we say pressure is reduced. Coming to ur question why velocity has to increase. From one end ur pumping fluid. And ur having a narrowing in the pipe. See fluid cannot flow back bcoz the pump pressure is very high . Fluid has only one direction to move. Now think what has to increase Pressure: force acting on pipe wall. Considering ur perspective that pressure has to increase when area decreases..... That means no. Of collisions or energy that is being transmitted to the wall is high which itself means the molecules are having high kinetic energy. 2nd law of thermodynamics states that energy gets diffused and distributed to attain maximum microstates possible= ENTROPY. Heat always flows from hot body to cold body. In ur view of pressure has to increase, pressure itself dependant on kinetic energy of molecules. If pressure is high, kinetic energy is high and molecules flow with high velocity. And if molecules move with high velocity there collision time with pipe wall reduces and hence pressure decreases.
As the area decreases f =pA will obviously decrease we don’t need pressure to decrease to accelerate the fluid ? So still a doubt why pressure decreases and the balloon eg is unclear
This doesn’t make any sense why does the pressure on the front decrease? I understand that the force pushing the fluid toward must be greater that the force pushing it back. So why isn’t it the case that the force pushing increases? Plus the water has inertia so when it is accelerating there should be more of a force pushing against the fluid.
this is what i was looking for, well explained EDIT : nevermind, i didnt understand this fully, question : how did the force increased at the funnel, but decreased after passing the funnel (the smaller pipe)?
This is not a full explanation. The area of the pipe reduces so there would be a force imbalance to cause acceleration regardless if the pressure was lower or not.
@@MathCuriousity The pressure is lower. When you look at the force imbalance you have to also take into account the pressure times the sectional area. So the explanation doesn’t take into account everything that is going on. It is not a complete proof of why the pressure is lower.
@@MathCuriousity You have to do a full free body diagram. The force of on the water in the left pipe is the pressure time the cross sectional area (call it P1xA1). Call the water force on the right P2xA2. So we know P1xA1>P2xA2 but this by itself does not tell us the relationship between P1 and P2 because we simply know one side of the equation is greater than the other side of the equation. That is why the proof is incomplete. It could be (and it is actually the case) that P2P2 yet we can still have P1xA1>P2xA2. What is also interesting is the static case where the water is under pressure but not moving (the small pipe is capped off). We know P1=P2 (by definition of a hydrostatic condition) but A1 does not equal A2 but we also know that net forces have to be equal to zero since there is no acceleration. This is because we have not accounted for the force in the container wall when doing the free body diagram. The container goes into tension in this case.
What you said doesn't seem entirely correct. For example, for the same straight pipeline, we can make the fluid flow through the pipeline at different speeds, but the pressure in the pipeline is the same. This indicates that under the same pressure (such as atmospheric pressure), the velocity of the fluid can be different. The correct explanation for the phenomenon in your video is as follows: due to the narrowing of the pipeline, the flow is obstructed, resulting in an increase in fluid pressure, and as a result of the increase in pressure, the downstream velocity of the pipeline increases. For example, winds moving at high speeds on Earth can be at one atmosphere, and winds moving at low speeds can also be at one atmosphere.
@@Rick_Cavallaro Do you think I don't know the so-called continuity equation? Obviously I do know it. But what you don't know is that to ensure the constant flow rate, there must be an increase in pressure, otherwise the fluid will not have acceleration in the narrowing pipe. So, in a certain sense, what you said is the same as what I said, but you talked about this phenomenon from the perspective of the continuity equation, while I talked about this phenomenon from the perspective of the increase in pressure.
Great job, finally understood Bernoulli's principle!!
I think when the water hits your hand, it has to do with the impulse momentum theory. Where the short amount of time of impact causes a large reaction force, considering the velocity of water is high before the impact. What an intuitive content!
Wow! Great video. Nicely explained this concept in a minute.
Nice comment
Best intuitive explanation of what's going on under the equations i've seen so far. Thank you very much!
Very good presentation to explain Bernoulli's principle.
This is a really interesting way to think about it, thanks.
Really cool video explaining the Bernoulli principle. Very easy to understand!
The thing is pressure or energy is always constant, when fluid accelerate due to narrow passage its static pressure is decreasing which is felt on the wall of the passage and kinetic pressure is increasing,
Overall all pressure is static pressure + dynamic (kinetic pressure) remains constant.
Editor has done a great job showing forces on every side of water
Holy moly
So happy to see float head physics again
Awww, I am so happy to see this comment :) Khan Academy has kept me very busy :-/
While the molecules in a fluid are constantly vibrating and jostling around, the
average distance between them tends to increase when the flow speed increases. This is especially true in the scenario described by Bernoulli's principle where a fluid is flowing through a pipe with a changing cross-sectional area.
Here's a more detailed explanation:
Constant Speed: In a region of constant cross-sectional area and constant flow speed, the molecules maintain an average distance due to the balance between their kinetic energy (related to their motion) and the intermolecular forces (the forces that attract or repel molecules from each other).
Narrowing Pipe (Increasing Speed): When the pipe narrows, the fluid is forced to speed up to maintain the same volume flow rate. This means the molecules gain kinetic energy.
Source icon
Source icon
Increased Spacing: As the molecules move faster, they tend to spend less time close to each other and more time further apart. This results in an increase in the average distance between them. The increased spacing means fewer collisions between molecules, which leads to a decrease in pressure.
Source icon
Important Note: This increase in average spacing is more significant in gases than in liquids. Liquids are much denser than gases, and their molecules are already closely packed together. So while the average spacing might increase slightly in a faster-moving liquid, it's not as noticeable as in a gas.
👏👏👏👏👏
It is no intuitive if not outright wrong that somehow increasing velocity results in a larger average distance between molecules. Where did you derive this drivel ?!
@@MathCuriousity It's wrong. In subsonic flow, normally below around 0.3 Mach, the flow is typically treated as incompressible. Above that speed, the flow can compress, and the molecules will therefore get closer together, not further apart, as the speed increases.
What you said doesn't seem entirely correct. For example, for the same straight pipeline, we can make the fluid flow through the pipeline at different speeds, but the pressure in the pipeline is the same. This indicates that under the same pressure (such as atmospheric pressure), the velocity of the fluid can be different. The correct explanation for the phenomenon in your video is as follows: due to the narrowing of the pipeline, the flow is obstructed, resulting in an increase in fluid pressure, and as a result of the increase in pressure, the downstream velocity of the pipeline increases.
For example, winds moving at high speeds on Earth can be at one atmosphere, and winds moving at low speeds can also be at one atmosphere.
@@enbinzheng-line
>> The correct explanation for the phenomenon in your video is as follows...
Nope. The increase in velocity in a narrowing pipe is simply due to conservation of mass in an incompressible fluid.
Omg omg, I finally understand bernouli 😢
Thank you 💗
I know it's impossible to cover everything in one minute, but I thought I'd mention the bit about it feeling like more pressure when it hits your hand...
The Bernoulli effect applies to fluids that we're not doing any work on. And on such flows, the "total pressure" remains constant. This is possible because the static pressure goes down and the dynamic pressure goes up when the fluid accelerates. The static pressure is what you'd measure if you were moving along inside the fluid. The dynamic pressure is what you feel when it hits your hand.
Wow the author should have mentioned this! Also may I ask you a question: what if we used a FUNNEL where every point compared to another point is decreasing in cross sectional area right to the end?
@@MathCuriousity I'm not entirely sure I understand the question, but in the subsonic region, the flow would continue to accelerate as the funnel narrows. The static pressure would continue to decrease, and the dynamic pressure would continue to increase. But you hit a limit at the speed of sound. The flow can exit the funnel at the speed of sound, but no faster. Things really get weird on the other side. Let's put a couple of funnels tip-to-tip. So the flow is speeding up as the first funnel narrows. We get it right to sonic as it hits the other funnels nozzle and begins to expand again (this is called the choke point). But instead of slowing down as it would in subsonic flow, it will continue to speed up into the supersonic range (assuming low enough pressure). But it will ultimately reach a point (depending on pressure) where it can no longer sustain this acceleration, and will then form a standing shock wave in the diffusing funnel. Going into the shock wave you have supersonic flow, and immediately on the other side, coming out of the shock wave, you have subsonic flow. What's perhaps even more bizarre is that the higher the speed of the supersonic flow going into the shock wave, the lower the speed of the subsonic flow coming out of the shock wave.
I am placing bets that you will win this competition
This is a very good explanation!!
This is a very good video! Concise and very understandable!
Superb video, well done Mahesh
Great job Mahesh 👏🏻
I believe while the pressure might be lower either at the walls of the channel or between fluid molecules, its a misconception that pressure is less in the forward direction. A good way to understand what I mean is, if you placed a detector in the front of your water faucet and shrunk the size of the hole the water has to exit, the detector will most definitely read more pressure since the water gouging out has more force applied towards that direction
Or if you just made an opening tube that goes up, you would see higher level in the left tube than right tube , indicating the pressure drop
What you're describing is what he touches on at the very end. Here's the short story...
What we normally call the "total pressure" is the sum of the static and dynamic pressure. When we accelerate or decelerate the fluid, without doing work on it, the total pressure remains constant. This means that accelerating flow is experiencing a reduction in static pressure and an increase in dynamic pressure. The static pressure is what you'd measure with an absolute pressure gauge if you were traveling along with the fluid. The dynamic pressure is what you feel when it hits your hand.
What you said doesn't seem entirely correct. For example, for the same straight pipeline, we can make the fluid flow through the pipeline at different speeds, but the pressure in the pipeline is the same. This indicates that under the same pressure (such as atmospheric pressure), the velocity of the fluid can be different. The correct explanation for the phenomenon in your video is as follows: due to the narrowing of the pipeline, the flow is obstructed, resulting in an increase in fluid pressure, and as a result of the increase in pressure, the downstream velocity of the pipeline increases.
For example, winds moving at high speeds on Earth can be at one atmosphere, and winds moving at low speeds can also be at one atmosphere.
Thank you sir!! Great explanation for simple mortals like me.
Amazing demonstration.
At a molecular level, faster molecules have fewer "bounces" against the container walls (= lower pressure) since they're traveling a greater distance parallel to the walls.
I don't think this is necessarily true
Explanation is cool and easy to understand
Very well explained in short time. Fantastic
Very good, well explained in a short time. Keep it up
Thank you very much!
Exceptional explanation.
how force at equilibrium,at 2nd part is less as at transition pushing force is large?
You made It intuitive,Thanks
Very good
Kya baat hai! Amazing
Great !
Such a fun video!
haha, very cool thanks, i had a misconception that pressure is just like force but turns out it is different...(it acts equally on all directions.. therefore a scalar quantity because no need of direction here)
Beautifully presented
Great 👍🏻 All the best.
very convincing
tnx very much
Super easy to understand after watching the vid 🤓
How can the pressure at the opening cross section of a pipe delivering free jet be atmospheric?
So what about p=F/A pressure is inversely proportional to area so why in this video area is less so pressure is also decreasing??
Wow thanks Finally makes sense
I think at the first part, the front force are bigger than the rear force so the air molecules go forward ??? can you explain it to me ????
Thankyou so much ❤❤❤
What about the area change that causes the force on the right to be smaller even if the same pressure?
Wow great video
Wow. I like this illustration a lot :D
Fantastic!
Why tf this guy has all the answers of my doubts?? The exact point of my doubt ... thanks sir💖
So nice of you
@@Mahesh_Shenoy yeh!
But how do we know the velocity is constant before the bottleneck narrowing ? It seems you somehow knew the velocity was constant because you somehow knew the acceleration was 0 before the bottleneck but how?
what if the we reverse the pipe diameter, where the flow is going from smaller diameter to larger diameter, assuming A to be smaller diameter section of the pipe and B to be larger diameter section of the pipe, in that case if we apply the same concept from the video, there is net force from A to B therefore pressure should be larger in B side of the pipe than A, which is not true, hence I think its better to see it from total energy way than the video.
thank you !
Why doesn’t the water slow down?
Hope u win the contest 😜
But why pressure loss in down stream,at varying cross section
I love the illustration. I just need to play with the math to understand it
Good.it was easy to understand
so, it means that when the area increases, the pressure also increases, when it decreases, the area also decreases?
Loved the explanation and animation
Amazing video boss!
Awesome explanation!!!
does this applies in exhaust pipes?
Thanks
In the balloon, the pressure is the same in all directions (~ statical fluid).
Amazing explanation
Very well explained!
I am a dumdum and have a question: How does the pressure change if the liquid goes through a squeeze, speeding up and then entering a larger void. In my heads logic it will keep the pressure of the tighter area and reduce speed again, right?
Beautiful!
Amazing.... Never knew this
Thank you soo much ❤️❤️
What??? Really 😮 No wait... Damn! 🤯
U did very well
Good job dude
Whatta explanation!
Superb
Loved it!
Well explained
Still didn't get it why pressure decrease??
Pressure is equal to force per area ?????
But why velocity increased when diameter decreased? I mean I know area decreases, continuity of flow rate says velocity should increase… but from physics from point of view, why velocity is increased when diameter is decreased? Why can’t flow slow down when area is decreased and thereby increasing the pressure back in the upstream side?
Pressure is concentration of force.
It is due to random movement of molecules causing collisions among themselves and also colliding to the wall of the container.
These collisions are not not perfectly elastic which means they transmit some of their kinetic energy to wall also.
If u ask why molecules move in random, it's again due to thermal energy.
Theoretically absolute zero kelvin is where even the gluons inside quarks stop moving.
But we are at 298k Or 25°Celsius which means every molecules around us and that made us all are in continuous motion.
These motions can be moving the molecules across the space or just rotating motions without changing its co ordinates.
The motion that cause changes in position is that responsible to transfer energy to other molecules and that is what HEAT.
Due to this the water molecules also move in random motion.
But we using a motor give them a way and energy to reach the desired location for using them.
The MOTOR PUMP generates energy by electricity and this energy is used to create negative pressure and pull water to tanks located on top of buildings.
Now another motor will push these water into pipe.
Pressure in the fluid is different from pressure exerted by the fluid.
Pressure in the fluid: measure of force exerted by moving column of fluid on its wall.
More dense fluid, more molecules, more pressure.
Very fast moving means molecules will be having their velocity vectors majorly in the direction of flow, that implies there collision on the wall decreases and we say pressure is reduced.
Coming to ur question why velocity has to increase.
From one end ur pumping fluid.
And ur having a narrowing in the pipe.
See fluid cannot flow back bcoz the pump pressure is very high .
Fluid has only one direction to move.
Now think what has to increase
Pressure: force acting on pipe wall.
Considering ur perspective that pressure has to increase when area decreases..... That means no. Of collisions or energy that is being transmitted to the wall is high which itself means the molecules are having high kinetic energy.
2nd law of thermodynamics states that energy gets diffused and distributed to attain maximum microstates possible= ENTROPY.
Heat always flows from hot body to cold body.
In ur view of pressure has to increase, pressure itself dependant on kinetic energy of molecules.
If pressure is high, kinetic energy is high and molecules flow with high velocity.
And if molecules move with high velocity there collision time with pipe wall reduces and hence pressure decreases.
As the area decreases f =pA will obviously decrease we don’t need pressure to decrease to accelerate the fluid ? So still a doubt why pressure decreases and the balloon eg is unclear
So the acceleration goes from 0 to accelerating at the bottle neck and then a micromoment later goes back to 0?!
Amazing
nice video
This doesn’t make any sense why does the pressure on the front decrease? I understand that the force pushing the fluid toward must be greater that the force pushing it back. So why isn’t it the case that the force pushing increases? Plus the water has inertia so when it is accelerating there should be more of a force pushing against the fluid.
Nice video
Nicely explained
This is exactly the voice of ram sir
No, this is my voice :/
Super👌👌
Supercalifragilisticexpialidocious sire.
Didn't understand
this is what i was looking for, well explained
EDIT : nevermind, i didnt understand this fully, question : how did the force increased at the funnel, but decreased after passing the funnel (the smaller pipe)?
i have the same question
🔥
I feel lied to 😢
This is not a full explanation. The area of the pipe reduces so there would be a force imbalance to cause acceleration regardless if the pressure was lower or not.
Can you explain further? I believe you are wrong! Certainly pressure will decrease kind sir!
@@MathCuriousity The pressure is lower. When you look at the force imbalance you have to also take into account the pressure times the sectional area. So the explanation doesn’t take into account everything that is going on. It is not a complete proof of why the pressure is lower.
@@yodaiam1000 can you explain this in more detail your comment about pressure times crosssectiomal area and what it applies to in the animation?
@@MathCuriousity You have to do a full free body diagram. The force of on the water in the left pipe is the pressure time the cross sectional area (call it P1xA1). Call the water force on the right P2xA2. So we know P1xA1>P2xA2 but this by itself does not tell us the relationship between P1 and P2 because we simply know one side of the equation is greater than the other side of the equation. That is why the proof is incomplete. It could be (and it is actually the case) that P2P2 yet we can still have P1xA1>P2xA2.
What is also interesting is the static case where the water is under pressure but not moving (the small pipe is capped off). We know P1=P2 (by definition of a hydrostatic condition) but A1 does not equal A2 but we also know that net forces have to be equal to zero since there is no acceleration. This is because we have not accounted for the force in the container wall when doing the free body diagram. The container goes into tension in this case.
@@yodaiam1000 very interesting! Any links for other videos or concepts titles so I can grasp what you are saying better!???
wow
You didn't compare pipes with the same diameter, same liquid pressure and different speed. Your explanation doesen't work there.
What you said doesn't seem entirely correct. For example, for the same straight pipeline, we can make the fluid flow through the pipeline at different speeds, but the pressure in the pipeline is the same. This indicates that under the same pressure (such as atmospheric pressure), the velocity of the fluid can be different. The correct explanation for the phenomenon in your video is as follows: due to the narrowing of the pipeline, the flow is obstructed, resulting in an increase in fluid pressure, and as a result of the increase in pressure, the downstream velocity of the pipeline increases.
For example, winds moving at high speeds on Earth can be at one atmosphere, and winds moving at low speeds can also be at one atmosphere.
>> The correct explanation for the phenomenon in your video is as follows...
Replacing one incorrect explanation for another isn't the answer.
@@Rick_Cavallaro Do you think I don't know the so-called continuity equation? Obviously I do know it. But what you don't know is that to ensure the constant flow rate, there must be an increase in pressure, otherwise the fluid will not have acceleration in the narrowing pipe. So, in a certain sense, what you said is the same as what I said, but you talked about this phenomenon from the perspective of the continuity equation, while I talked about this phenomenon from the perspective of the increase in pressure.
Sir u teaching great,but why u r showing fake accent
how force at equilibrium,at 2nd part is less as at transition pushing force is large?