Archimedes' Principle
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- Опубліковано 20 сер 2024
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This video explains how to calculate the weight of a horse using Archimedes' Principle.
Includes a demonstration with digital scales and overflow apparatus.
The forces acting on hot air balloons, cargo and cruise ships is explained by this principle from the ancient Greeks.
Marine architects and engineers use this basic principle to design floating structures - ships, submarines and oil rigs.
Suitable as a learning resource for an introduction to buoyancy and Archimedes in physics and general science.
![Дон ДОН, Алаудинов и СБЕЖАВШИЕ из под Курска ахматовцы 😁 [Пародия]](http://i.ytimg.com/vi/dEfCf5IK26Q/mqdefault.jpg)
You gave me the image of the clever grandpa or uncle I always wanted to have who fascinates his grandchildren, nephews and nieces about the basic laws of nature, the stars, etc... With a reliable knowledge where even their teachers in school can have a lesson from... And that impression is great!!
Your (grand)children, if you have them, are blessed with such a teacher in life.
It would've been great having these videos when I was in school back in the 80's!!
Another great video.
What this method measures is the VOLUME. You calculate mass by multiplying volume and density. Two different bricks of metal may have the same volume (and this method will show it) despite that they might have different densities (and therefore different masses).
I'm in grade 8, and i have a test coming up about this. but it was too much info, but fun to learn! i totally get it, and now im ready! thanks!
You need a material that will preserve its volume when evacuated. And this is a broad topic of material science. You would need a material strong enough to sustain high vacuum volume and light enough to actually float. Google for "vacuum balloon" - it gives some interesting links.
Placing the brick on floating wood displaces a weight of water equal to the weight of the brick.
It's not the pressure inside balloon that makes it fly, but its overall mass that displaces air. Making something inside of a balloon (usually a gas) hotter just means that its density will decrease thus reducing the mass of the interior. The balloon with vacuum inside was only an example (it would inflate). But the point is that the buoyancy is dependent on the mass inside a container. It's explained here: en . wikipedia . org/wiki/Buoyancy#Density (remove all 4 spaces between the 2 dots).
The buoyant force acting on an object completely submerged in water equals the weight of the displaced water. In this example the volume of the displaced water equals the volume of the brick.
Both the gold and iron bricks will experience the same buoyant force (assuming they are the same volume). The net force down (force of gravity - buoyant force) acting on the gold block will be greater because it is denser, therefore heavier, then the iron brick). .....
Assuming that a balloon would survive such flight, it would rise as long as its mass would be less than the mass of the particles it displaces around (for example: air in the lower atmosphere). It would reach equilibrium at some height and then stop rising. The substance it's filled with would only affect its final height (with vacuum giving the best result). Hard to tell right away what composition would give what final height, but you get the idea, I hope ^^
Block has a force down called weight.
The weight of the "displaced" water must equal the block for it to float. The displaced water is effectively pushing against the block to retain the space from which it was displaced. This results inan upwardly force called buoyancy.
As the block is much less dense than the water then only part of the box will sink ie the volume of the block which equals the same weight as the water.
Example
water = 1g/cm3
box 0.25g/cm3
1/4of the block will sink
Because the block is less dense than the water it sits in.
Density = Mass/Volume
Thus,
Mass=Density(Volume).
The weight of the volume of water displaced by the block equals the weight of the block. Since the block is less dense than the water a smaller volume of water has more mass than an equal volume of the block. Since only half the block submerged this suggests that the block is half as dense as the water.
Yes, but you might have to push and hold the hollow one under water. This happens when the buoyant force exceeds the weight of the object.
AFAIK, the buoyant force would be the same. Although the hollow thin shell brick requires much less force to push it upwards (therefore it floats). You need to manually sink it and then it will push the required amount of water (as presented in the video).
I did it!! I'm best, I'm genius! Or... I guess it wasn't that hard... ;)
Great video, Hilaroad!
Excellent lessons !!!
good and well detailed video, this helped me with my project thanks!
in archimedes' time, the king ordered someone to make a crown from a brick of gold. then the crown is made and when they check it, the mass of a standard brick of gold is equal to the mass of the crown. but archimedes doubt that the crown is not made of pure gold. in the end, he placed both objects, the brick and the crown, in a container with the same amount of water. the crown displaces more water than the gold. i thought that the mass of an object is equal to the mass of water displaced.
Please make more explaining videos abaut physics (mechanics).
this is the wealth of Greece!
Great Videos...
Now i understand it, very good vid. Thanks
Ah. So and the significance of the name Archimedes makes this ever so relevant.
But I gotta say this is though basic chemistry, its applications are useful when extended to nautical engineering. Also, I have to admit that I came across this video after watching "Meet the Medic", which have no relevance to science but in particular mad science! LOL! And video games.
Thanks man. Nice video
Very good!
Fantastic vid .. thts wonderful !
this guys voice is so relaxing lol
i don't get it-shudn't the weight of displaced fluid, when you put the stone on the block, be equal to the sum of the weights of block and the stone? how come the weight of displaced fluid equal to just the weight of the stone?
great video
cool vids, thank you
Bravo!
weight of the body immersed in water=buoyant force...then y do some objects
(like needles n paper etc) sink in water??they should remain in equilibrium if their weight=buoyant force.......
thats a big horse!
prety good
oh and thx for the vid , realy interesting like always :D
Which direction would a helium filled ballon travel inside the space shuttle?
In fact, i'm not understand this pirinciple thoroughly.
My question: The actual weight of an object is 12N. The apparent weight of the object when it is immersed in water is 9N. What is the density of the object?
Can anyone help me to solve this question??? Thanks.
yup 1587 lbs
It would DEFLATE, I meant.
1,600 lbs?
i no 1 part of my exam im not failing...
!!!!
that horse is overweight....