I saw in the comments of an older video that you're a former British Army Officer. Made me chuckle as I've been teaching A level Maths n Physics (internationally) and I'm a former SSBN Weapons Artificer. Teaching this material is like doing the apprenticeship again. Absolutely loved the projectile video. As submariners we never learned much about the Army. Please keep the content coming - my students and I love it. Thank you.
Finally! I'm giving this video a thumbs up just because it's here on UA-cam! P.S. The Celtic legends say that the ball bearing's still falling through the tube of golden syrup. XD
Hi!!! Firstly, thank you very much for the explanation, it helped me a lot. I did this experiment for a school project, but my professor gave 0/10. His argument was that because the liquid isn't moving then the flow isn't laminar and due to that my whole experiment was wrong. Could you please help me understand if that's true? I don't understand what he means by laminar flow and I'm not sure if I should have move the water with my finger to create a "laminar flow". Btw, I feel this professor just wants to mess with me and my classmates cause he is kind of condescending. I would appreciate if you could give me an explanation or even some material to read cause I really want to take him on a debate. Thank you again!!!!:)
To make the fluid flow, you can drop the ball bearing into the tube, and the ball moving through the fluid will imitate a situation where the fluid is moving through a stationary ball. So with this, you can make the liquid move. But, it won't necessarily be laminar yet. Your professor is correct in which the experiment won't work if the flow isn't laminar since Stoke's law requires the object to be a sphere, and the flow to be laminar. I'm not too sure how a flow can be laminar, but I can describe to you some of the properties of it. Within a glass tube, a fluid in laminar flow basically has multiple layers that range from the central column of the fluid to the outer layer of the fluid in contact with the tube. These layers have different velocities where it's slower at the outer layers due to friction with the glass walls. But, most importantly, these layers have a constant velocity, including direction. In other words, it's a sort of relaxed flow of fluid. To make it laminar, as opposed to a 'turbulent' flow, it depends on 1) the type of fluid, and 2) the area through which it is flowing. These conditions have to be so that the fluid doesn't reach a velocity where it becomes a bit turbulent. In short, you have to make the conditions suitable for the ball to sink down the tube in a calm and smooth manner. If you use a wider tube, you can achieve this. Since the ball will be far apart from the walls of the tube, where water is bouncing off it, which can potentially disturb your ball's movement.
I know this is old comment, but I also would want to give my 50 cents here. It all depends of the view. If you are on the falling sphere and observe the liquid, then the liquid is actually flowing around the sphere. Motion is relative.
Can we just get a quick contextual clearup of the choice of 'weight' over 'mass'? I saw weight implicates gravity, but I'd rather not Google it and presume. Plus others here might learn from my question. Thank you 🙊
yo, this video was sick, i gotta find out how they came to that conclusion of 6pi*eta*rv, could make a good experiment. Anyway, what advice would you have to an applicant to a sutton trust engineering program, what should i put down in the personal statement even though i have no prior experience engineering? im asking cause i believe you got at least your BSc in engineering. thanks tho Edit: what's Navier-Stokes doing on the wikipedia? these 2 stokes the same guys?
Then it won't meet the conditions for Stoke's law (you need a spherical object for laminar flow, and laminar flow is a condition for Stoke's law), so it doesn't apply to this theory
I saw in the comments of an older video that you're a former British Army Officer. Made me chuckle as I've been teaching A level Maths n Physics (internationally) and I'm a former SSBN Weapons Artificer. Teaching this material is like doing the apprenticeship again. Absolutely loved the projectile video. As submariners we never learned much about the Army. Please keep the content coming - my students and I love it. Thank you.
Nice, btw I have many simulations in Python!
No wonder he's such a pro!!!
the ending was the longest 1 minute 6 seconds of my life and i sat through every second of it because it was oddly satisfying
a small video makes me understand so much better than a 1 hr edexcel int a level physics lesson
Dude you deserve so many more subscribers!! You're amazing!
I am here from Gorilla Physics' ref.. And I am so glad for the video. Thanks a ton!!
This was one of the theory which is hard to understand thanks alot hats off for your experimental explanation
thank you so much, have a physics test tomorrow on materials and you've just helped me wrap my head around the one thing i really struggled with!
Stokes law and terminal velocity was understood at it's best.
Actually
Finally! I'm giving this video a thumbs up just because it's here on UA-cam!
P.S. The Celtic legends say that the ball bearing's still falling through the tube of golden syrup. XD
Excellent presentation. The crispest I have seen
This was soooo helpful. Beautifully explained. Wonderful stuff. Thanks a lot.
I can't thank you enough for this video!
easily understood cant believe a 7min video did this😅thanks
thanks for the video
Hi!!! Firstly, thank you very much for the explanation, it helped me a lot.
I did this experiment for a school project, but my professor gave 0/10. His argument was that because the liquid isn't moving then the flow isn't laminar and due to that my whole experiment was wrong.
Could you please help me understand if that's true? I don't understand what he means by laminar flow and I'm not sure if I should have move the water with my finger to create a "laminar flow".
Btw, I feel this professor just wants to mess with me and my classmates cause he is kind of condescending. I would appreciate if you could give me an explanation or even some material to read cause I really want to take him on a debate.
Thank you again!!!!:)
To make the fluid flow, you can drop the ball bearing into the tube, and the ball moving through the fluid will imitate a situation where the fluid is moving through a stationary ball. So with this, you can make the liquid move. But, it won't necessarily be laminar yet.
Your professor is correct in which the experiment won't work if the flow isn't laminar since Stoke's law requires the object to be a sphere, and the flow to be laminar.
I'm not too sure how a flow can be laminar, but I can describe to you some of the properties of it. Within a glass tube, a fluid in laminar flow basically has multiple layers that range from the central column of the fluid to the outer layer of the fluid in contact with the tube. These layers have different velocities where it's slower at the outer layers due to friction with the glass walls. But, most importantly, these layers have a constant velocity, including direction. In other words, it's a sort of relaxed flow of fluid.
To make it laminar, as opposed to a 'turbulent' flow, it depends on 1) the type of fluid, and 2) the area through which it is flowing. These conditions have to be so that the fluid doesn't reach a velocity where it becomes a bit turbulent.
In short, you have to make the conditions suitable for the ball to sink down the tube in a calm and smooth manner. If you use a wider tube, you can achieve this. Since the ball will be far apart from the walls of the tube, where water is bouncing off it, which can potentially disturb your ball's movement.
I know this is old comment, but I also would want to give my 50 cents here. It all depends of the view. If you are on the falling sphere and observe the liquid, then the liquid is actually flowing around the sphere. Motion is relative.
quandale dingle
Very very nice 😊👌👍
I look the video for just experiment video😅lol,otherwise hume kaha itni difficult english samajh ata he,,awesome experiment ❤❤
thank you!!
Can we just get a quick contextual clearup of the choice of 'weight' over 'mass'?
I saw weight implicates gravity, but I'd rather not Google it and presume.
Plus others here might learn from my question. Thank you 🙊
yo, this video was sick, i gotta find out how they came to that conclusion of 6pi*eta*rv, could make a good experiment. Anyway, what advice would you have to an applicant to a sutton trust engineering program, what should i put down in the personal statement even though i have no prior experience engineering? im asking cause i believe you got at least your BSc in engineering. thanks tho
Edit: what's Navier-Stokes doing on the wikipedia? these 2 stokes the same guys?
Hello, could you tell me where you got those spheres from. And are they of the same density?
I could not find this part of Materials in the spec and OCR A CGP book ?
If upthrust + viscous force = weight at terminal velocity, what when object is suspended (velocity=0)?
thank u so much it was perfect
How to plot a graph under measurement viscosity using glycerin using stoke's law
can you do a video on turbulent flow
Hi. Could you please tell what liquid is used in the beaker?
This was bubble bath
Thanks!
Is this worth knowing for the aqa syllabus?
Thanks a lot 😎
how the velocity change till the object reaches its terminal velocity?
Thanks bro
Isnt drag force in symetrical objects 0?
What about the forces experienced on the left and right of the ball bearing?
They are equal in size so cancel each other out.
What if the moving body is not spherical?
Then it won't meet the conditions for Stoke's law (you need a spherical object for laminar flow, and laminar flow is a condition for Stoke's law), so it doesn't apply to this theory
Thanks
Luis trying to get that 10 minutes with that last clip lmao
"You" caption at end😅
For my American homies: "upthrust" means "force of buoyancy"
Thank you !!