Archimedes Principle, Buoyant Force, Basic Introduction - Buoyancy & Density - Fluid Statics

[@TheOrganicChemistryTutor]

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[@samrahmohamed2332]

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@@samrahmohamed2332 third law of motion

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[@heidetenchavez9911]

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?

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You are amazing! Finally buoyant force understood : )

[@mikebaee7731]

really loved that explanation of boyancy with the cylinder in the deep / shallow water.. this is my life now, getting excited about understanding science - I'm ok with it

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I really appreciate your explanation Sir🙏

[@matiasarcelus7406]

Thank you for this video it helped understand this formula more

[@nourfouad2075]

thanks a lot finally the buoyant force has understood

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Fantastic 🎈..easy explanation

[@10yearswithbtob71]

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[@angeliaclemons755]

Do we include bouyant force for any object suspended in air? I’ve never learned that before

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And this is known as organic chemistry.

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Excellent! Helped a lot :)

[@ThatOneOddGuy]

10:39 for b) I think the answer is ~97.9513N = T

[@Ibex_17]

I have no words

[@thabanimbatha5235]

phenomenal video.....my question is does a mass an object submerged multiply by it density give us a volume of a fluid displaced?....

[@CyberTitan-dy3gy]

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 :)

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[@treeislife93]

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?

[@fanimeproductionst.v.3735]

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.

[@naylonaylo5954]

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.

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[@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

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[@isaacnewton4145]

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 🤔

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thank u soooooomuch

[@chrisklugh]

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?

[@davemarco7014]

Thanks for explaining and still I don't get it I'm so dumb huhu

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マルコデイブ dont worry it hard

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Yes

[@samrahmohamed2332]

Which law of motion does upthrust force related please

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[@redus202]

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?

[@nick2232]

no

[@mathewsnyondo-j1s]

😇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.

[@thrillifpeople5337]

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[@thrillifpeople5337]

what is that p thing the row thing and wtfff is pahg

[@SanjaySingh-uu8zf]

Hello i have a doubt that mg +the F1 would be acting downwards ?

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[@saradeek2874]

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

[@GPStan2157]

F2 is greater as you go deeper because the deeper the object goes, the more force it has because the pressure is greater.

[@mickzomer2470]

if an object has different side surfaces (m2), does it matter for the buoyant force? I mean if you’d put a stick in the water vertically it has way less upward force than if you’d put it in horizontally. While the weight (water displacement) stays the same?

[@mickzomer2470]

@WhatTheHell AmIDoingWithMyLife but if the pressure exerted by the object changes, the pressure exerted by the water should also right? And since that’s the bouyant force, I dont get it

[@jacott1382]

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?

[@yaweli2968]

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.

[@ziadaldohaim3142]

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.

[@ahmeds.hindawy9985]

(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

[@rizkaapriliani733]

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?

[@sebastiangottlieb1527]

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

[@petrzenisek3667]

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.

[@jimbobjr11]

You probably cant do basic algebra so good luck becoming the next newton. 🙂

[@Dinfes2]

so in the first example we are working with liquid oxygen? since I think air at room temperature is gas, but im not sure.

[@ahmedabdelalim3810]

i just wondering why the tension dont becomes zero because it equals the force minus weight and they are equal according archimedes principle

[@noahkirkpatrick8912]

So can we make rockets that act like slingshots from the ground. Put people in cube of water to survive the g force???

[@BB-qe1fc]

Did u tutor at Nova Southeastern?