Archimedes Principle, Buoyant Force, Basic Introduction - Buoyancy & Density - Fluid Statics
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- Опубликовано: 2 окт 2024
- This physics / fluid mechanics video tutorial provides a basic introduction into archimedes principle and buoyancy. It explains how to calculate the upward buoyant force acting on an object and it shows how to derive the buoyant force formula. It discusses how to use free body diagrams to calculate the tension force in a rope supporting a block in the fluid using the buoyancy force and the weight force of the block.
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Md. Kamrul Islam could you please tell me the upthrust force is it an example of second law or third law of motion?
@@samrahmohamed2332 third law of motion
InshaAllah!
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Just wait till you watch the full 4 hour video!
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I found this video and my first thought was 'I love you'. Currently doing a uni exam and my question is similar to this
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He is not a god, so he can't do what you are saying...
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Because he doesnt have an ego like most teachers and professors out there
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Key Questions in video:
0:37
Is it easier to lift the block in air or is it easier to lift up a block if it's submerged
1:40
What is the tension force in the rope if the block is in a vacuum?
2:43
What is the tension force if the block is in air?
4:11
How do we calculate the buoyant force?
:(
Bidi
SUPERB EXPLANATION!!
This is sooo helpful. I actually get it when you explain it!!! Thank you.
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Greatest of all time
Do we include bouyant force for any object suspended in air? I’ve never learned that before
Well explained. Thank you
Best Teacher that I've seen ever
When you learn more from a free institution (RUclips University) than the university you actually pay to learn😂😂 I want my money back😂😂
Thanks for the good explanation
Can you explain to me why a cylinder or container that has a vacuum in it wont float?
Or to put some context to it, why do we use helium to float a blimp (I get that) but we don't use an internal vacuum instead of a gas?
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I have a question. So the gravitational force is equal to the bouyancy force (Fz = Fb), but the block and water have two completely different densities, so how does that work?
may God bless you
Excellent! Helped a lot :)
What would we do without you sir? Thank you, from the bottom of my heart, these topics are not easy. Thanks for the clarity :)
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@@kalebyeneneh7693 Sir this is a physics video
I dont know why we have this at 7th grade but thankss
高橋julia poor gurl i feel sorry for you
Hello i have a doubt
that mg +the F1 would be acting downwards ?
I hope your life is filled with many blessings sir. thank you so much.
greattt, so detailll
i wish teachers in my school actually knew how to teach
Finally someone explain it simple... thank you for your time you are doing great job keep it up
You are amazing! Finally buoyant force understood : )
Sir I have some few question about density and buoyancy force
No. 1 =Is hot water more dense or cold? i think cold is more dense.
No. 2 = if cold water more dense what it mean is it more buoyancy?i think cold water more buoyancy.
No.3 =if cold water more dense so does it help for swimming easily? i think cold water help swimming.
No.4 =is water more dense mean more buoyancy easy to float or less dense mean less buoyancy difficult to float?
1. Cold water is denser.
2. Don't qoute me on this but I think it depends on the density of the object
3. Yes, but the increase in buoyancy is minimal
4. Again I think this depends on the object being submerged.
Is there any topic that is connected to this lesson? Of course the video is good, nothing wrong but myself, I didnt understand. LOL I HAVE ONLINE FINAL EXAMINATION THIS WEEK.
Wouldnt the water above the immersed object exert pressure upon it? It actually supports the water above it? Or does the ground under the object support the water above it?
Can i send you drawn problems which you may solve and explain to me logically.
Thanksss alot!
Thank you, honestly I learn better from you than my actual teacher.
And this is known as organic chemistry.
Sir I do almost everything But why did u use the density of water instead of air
Sorry density of aluminum not water
Thank you so much! I could never understand the equations in class but this explained them perfectly!
nah bc im still confused
always excellent lectures i like it
God bless you
man i just love u so much. all hail the king of teaching. BTW i really love ur voice. no homo. it gives me ear gasm laughing my fking ass off laughing our loud
Great
Thank you
a) A floating platform is to be anchored in one of the water-sports lake areas to be used as mooring pontoon for safety and rescue boats. It is proposed to anchor the platform to the lake-bed using a makeshift anchor consisting of a lump of cast iron of volume0.5m3, and a length of thin steel cable. Assuming the cable remains vertical and has negligible weight, calculate the tension in it due to the anchor.Take the cast iron density to be 7850 kg/m3 and the density of water to be 1000 kg/m3. can you help me with this please?
no
thank you so much
Which law of motion does upthrust force related please
😇what if the a question was like this [A 10.0-kg block of metal measuring 12.0 cm, 10.0 cm and 10.0 cm is suspended from a scale and immersed in water as in Figure 1. The 12.0- cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the water.
Take P_atm=1.013×10^13 N/m^2 and ρ_water=10^3 kg/m^3
i. What are the forces acting on the top and on the bottom of the block
ii. What is the reading of the spring scale?
iii. Show that the buoyant force equals the difference between the forces at the top and bottom of the block.] how can one answer it.
Hi everyone,can somebody tell me is is possible to ask this guy a question,if so how do I contact him.......thanks
phenomenal video.....my question is does a mass an object submerged multiply by it density give us a volume of a fluid displaced?....
I can't explain it theoretically, but no- the unit of volume is m³. Mass × density would be kilogram × kilogram per metre cubed and work out as kg²/m³.
In physics, as a general rule, if the units don't work out then the formula is wrong. Don't want to say too much and ill-advise you, but hope that helped :)
hi sir, first of all thanks for the video, it really helps! but i'm confused about the 9:49 part. isnt the V the volume of the silinder? and the density is the densiry of the water right? then how come the two of that multiplied equals the mass of the fluid?
Well yeah V is the volume of the cylinder, but that also makes V the volume of the water it displaces, which is what you need to calculate
What is the box is a open metal box of 20 tonnes? When submerging water will go inside the box... do we have to add the weight of the water + the weight of the metal box?
I have no words
well tbh im watching this since our uni teacher put in for the entirety of the course your videos and some other, i think khan academy. Im glad but i would have wanted to have a real f2f teacher....
But shouldn't F1 be greater as you go deeper? Since the amount of water above you is greater thus more pressure, please can you explain
F2 is greater as you go deeper because the deeper the object goes, the more force it has because the pressure is greater.
The proof of buoyant force makes no sense. The height h in the expression is the height of the object immersed, not it's depth, do it should not change!
can someone explain to me why the change in pressure equals mg. Thanks!
Did u tutor at Nova Southeastern?
no cap bro i have a test tomorrow so thx
If the net force is the buoyant force the object should go out of the water i don't think it is a net force
Thanks for explaining and still I don't get it I'm so dumb huhu
マルコデイブ dont worry it hard
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マルコデイブ physics is arguably the hardest of all, even than math; one day you will have an eureka moment when everything make sense; sound silly but that true
Yeah like when I was a child math was so hard until I am a high school it seems very easy for me... So adults have a capable brain for physic well thanks for cheering me mate lab ya
Please increase volume
I dont know why I'm here but I'm lost as hell so I'm just going to see myself out
10:39 for b) I think the answer is ~97.9513N = T
Fantastic 🎈..easy explanation
What if you have a heavy block sitting on a wood that is partially submerged in water. You know the height of the block and the area of the wood. How do you find the height for the part submerged in water.
P= m/v. In this case Fb=W, I suppose you are given the weight(m*g=w), and you have the density. Therefore w= V*p*g. If you already have the Length and width, Make V= l*w*h (h is the submerged part); and solve.
Thanks Mark Wahlberg
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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
Show how much work done with barometer😅😅😅
You mentioned Fb is F2 - F1. It means F2 is greater than F1. How can FB be in the upward direction? It has to be in downward direction right? Am I missing something in interpretation 🤔
i just wondering why the tension dont becomes zero because it equals the force minus weight and they are equal according archimedes principle
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what if we are trying to find the force exerted on a circular window like for example a submarine window. given the density of seawater and radius only?
Is the Area the same with either the force acting at top and bottom?
given that the surface of the window is flat and submerged vertically.
somebody tell me what the fuck happened at 6:45
So can we make rockets that act like slingshots from the ground. Put people in cube of water to survive the g force???
Why is the pressure on the bottom surface equal to mg/A? I get that there is a pressure on the bottom but I don’t get why it’s equal to mg/A
The force acting on it is the object’s weight and weight is equal to mg.
The formula for pressure is F/A.
So P=mg/A
You Learn Education pressure is force/Area and the force is weight=mg.divide weigh by Area.
The channel is helping me pass college rn 😅
I've watched many videos from your channel whenever I got problem on my understanding what my lecturers taught, and know i understand after i watch ur videos, so thank you very much
I’m still confused on where and why you multiplied 9.8 by 10 at 2:42
it's acceleration due to gravity (g) which is equal to 9.8 m/s^2
My head aches after watching
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Thanks for the explanation😊
Something doesn't add up.
According to your diagram I thought it must mean if you have really long cylinder, it must exert larger buoyant force if it's vertical than horizontal, as if it is vertical, lower end would be deeper therefore experiencing bigger pressure. Turns out it does, but at the same time, it has smaller area than if it was horizontal so overall force is the same... by coincidence?
Isn't that just super neat if you would define variable on which you would rotate that cylinder, and you would define buoyant function at every point of this variable, every time it would cancel out perfectly, that's way too clean, there must be some process in the background that I don't get.
And yeah I know it just wants to be replaced by the same volume of water but that is just consequence of this calculation, not the cause. I will not be satisfied by some vague notion of sentient water that feels something is in it's way.
I'm looking for deeper process like to explain why is everything falling at the same rate. According to Newton it was coincidence, that mass would cancel with inertia PERFECTLY, well Einstein found out not really, things are actually stationary and spacetime is curved - something like that.
You probably cant do basic algebra so good luck becoming the next newton. 🙂
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(to find FB : it can be solved easily by the relation ( Fg/FB) = (density of block / density of fluid
then find the tension force on block
Woah