https://www.youtube.com/watch?v=NXhwpRCzmuM

Science students would be familiar with the “Archimedes’ principle” today.

That principle can be modified into the “law of floatation” or “law of buoyancy”.

How did the principle and law come about?

Was it deliberate or accidental?

Archimedes lived in one of the most influential cities of the ancient world called Syracuse.

Archimedes together with other scientists and researchers of his time were charged with proving that a new crown made for Hieron, the king of Syracuse, was not pure gold without doing any damage to the crown?

Another version said he was to find out the principle or explanation that will support the floating of the “Syracusia”, a massive ship that was to be constructed and presented as a gift to Egypt.

Archimedes was sitting in a bath house one day wondering how a heavy object can float.

He was inspired that an object proportionally immersed in a fluid will displace an amount of water equal to its own weight.

He forgot that he was naked in the bathroom and ran to the street en route to the Kings palace shouting "Eureka!", "Eureka!" ("I have it!" in Greek).

This logic is critical in the construction of ships.

Heavy steel materials are placed at the base of the sheep which can displace a large volume of water.

To the effect that whatever the other items used in constructing the ship it will not sink still but float.

Applications of Archimedes’ principle
When a glass is filled to capacity with water and ice cubes are then introduced to it, what happens? In kike manner as the water over flowed the edge when Archimedes entered his bathtub, the water in the glass will spill over when ice cubes are added to it. If the water that spilled out were weighed, it would equal the upthrust on the object. From the upthrust or upward force, the volume or average density of the object can be determined.
Archimedes determined that the crown he was investigating at the time was impure gold because of the volume of the water displaced. This was arrived at because the volume was different due the various densities of the metals. Additionally, this principle is utilized in a large variety of scientific research subjects including medical, engineering, entomology, engineering, and geology. Copious articles exist on the use of Archimedes’ principle in bone volumes/densities, submarines, water-walking bugs and geology.
Archimedes’ principle summary: upward force= weight of liquid displaced

MNEUMONIC= Up wold (wold = weight of liquid displaced)

Bottom line: You can make a discovery at any time and in any place.

Remember to subscribe and click the notification bell now.

Also watch other videos.

The Greek was downloading hot shiit...

A floating object displace the weight of water eqals to its weight

I'm coming to finish my investigation in this thread

The principle doesn't explain why a brick would not float by displacing it's equal volume of water in weight.
I think the principle is for hollow objects and is dependent on the surface area to weight ratio.

Civilization goes where education goes from egypt to greek to britain to usa but unfortunately we are not educated here only schooling.

I doubt if the mass of an object can be found by this method

Great info, learnt this in 6th grade and it hasn't left my memory.

gbadexy:
The principle doesn't explain why a brick would not float by displacing it's equal volume of water in weight.
I think the principle is for hollow objects and is dependent on the surface area to weight ratio.

i think it has something to do with the surface tension or surface area.

ps:thats a very good question sir.

AmeLonRo:

https://www.youtube.com/watch?v=NXhwpRCzmuM

Science students would be familiar with the “Archimedes’ principle” today.

That principle can be modified into the “law of floatation” or “law of buoyancy”.

How did the principle and law come about?

Was it deliberate or accidental?

Archimedes lived in one of the most influential cities of the ancient world called Syracuse.

Archimedes together with other scientists and researchers of his time were charged with proving that a new crown made for Hieron, the king of Syracuse, was not pure gold without doing any damage to the crown?

Another version said he was to find out the principle or explanation that will support the floating of the “Syracusia”, a massive ship that was to be constructed and presented as a gift to Egypt.

Archimedes was sitting in a bath house one day wondering how a heavy object can float.

He was inspired that an object proportionally immersed in a fluid will displace an amount of water equal to its own weight.

He forgot that he was naked in the bathroom and ran to the street en route to the Kings palace shouting "Eureka!", "Eureka!" ("I have it!" in Greek).

This logic is critical in the construction of ships.

Heavy steel materials are placed at the base of the sheep which can displace a large volume of water.

To the effect that whatever the other items used in constructing the ship it will not sink still but float.

Applications of Archimedes’ principle
When a glass is filled to capacity with water and ice cubes are then introduced to it, what happens? In kike manner as the water over flowed the edge when Archimedes entered his bathtub, the water in the glass will spill over when ice cubes are added to it. If the water that spilled out were weighed, it would equal the upthrust on the object. From the upthrust or upward force, the volume or average density of the object can be determined.
Archimedes determined that the crown he was investigating at the time was impure gold because of the volume of the water displaced. This was arrived at because the volume was different due the various densities of the metals. Additionally, this principle is utilized in a large variety of scientific research subjects including medical, engineering, entomology, engineering, and geology. Copious articles exist on the use of Archimedes’ principle in bone volumes/densities, submarines, water-walking bugs and geology.
Archimedes’ principle summary: upward force= weight of liquid displaced

MNEUMONIC= Up wold (wold = weight of liquid displaced)

Bottom line: You can make a discovery at any time and in any place.

Remember to subscribe and click the notification bell now.

Also watch other videos.

Nice one, op! You sort of brougt back fond high school memories.

gbadexy:
The principle doesn't explain why a brick would not float by displacing it's equal volume of water in weight.
I think the principle is for hollow objects and is dependent on the surface area to weight ratio.

I think its because brick or block has pores where water can pass through.

kayelm87:
I think its because brick or block has pores where water can pass through.

lets take a bar of gold as example, it would still sink.

25tolife:
lets take a bar of gold as example, it would still sink.

An object will only float if the weight of the object is equal to the upthrust acting on it.

nanyanuel:

An object will only float if the weight of the object is equal to the upthrust acting on it.

hmmm,ok. I still want to knw more. I did nt clearly understand the principle though i crammed it about 8 years ago.

kayelm87:
I think its because brick or block has pores where water can pass through.

Even solid metal brick would sink.

Nice. We Learn!

When a body is totally or partially emerged in a fluid, it experiences an upthrust which is equal to the weight of the object body displaced.


One of the laws I can't forget so easily. Kudos to him!

Me wey I don even forget every about Archimedes

gbadexy:
The principle doesn't explain why a brick would not float by displacing it's equal volume of water in weight.
I think the principle is for hollow objects and is dependent on the surface area to weight ratio.

What the general Archimedes principle was trying to convey is that an object submerged in a liquid experiences a force which tends to push it upward, irrespective of whether the object is floating on or sunk beneath the liquid.

He also propounded another principle-- the principle of floatation-- which easily answered your question. It states 'for an object to float on a liquid, the weight of the object must be equal to ( or less than) the upthrust of the liquid.

The brick would sink because it's weight is greater than the upthrust the water exerts.

The principle is not limited to hollow objects, because a log of wood do float on water.

gbadexy:
The principle doesn't explain why a brick would not float by displacing it's equal volume of water in weight.
I think the principle is for hollow objects and is dependent on the surface area to weight ratio.

I think some guys have explained this already. Let me just add this.
If you take that piece of block and measure its volume and weigh it, then you measure an equal volume of water and weigh it as well, you will discover that the brick will definitely weigh more. This indicates that the brick has higher density. Hence, the upthrust from the water will be insufficient to lift it up to the surface of the water when thrown in it. And upthrust is less than the weight of the object, the object sinks.

What about throwing it in a ocean, is the block heavier than the ocean?

25tolife:
lets take a bar of gold as example, it would still sink.

It would sink because the weight of the gold is greater than it's upthrust (upward force in the water)

I think density answers the law of flotation better.
It's what I was grappling to explain earlier.
Irrespective of whether hollow or solid, materials less denser than water would float on it.
The higher the mass to surface area ratio is i.e mass over volume or density, the more it would float over more denser materials.
A block of wax or even plastic would flat on water.
Same thing with gases.

Megaflex:
It would sink because the weight of the gold is greater than it's upthrust (upward force in the water)

thanks.

You are correct. But if 10 bars of gold are at different edges and an aluminium slate or slates of aluminium form the the other covers it will not sink once it is not leaking. Its a principle with applications. Please go to my youtube channel, watch other videos and subscribe. I am happy and I love you.

25tolife:
lets take a bar of gold as example, it would still sink.

I love this beautiful response sir.

You are correct. density and weight go hand in hand. This a principle with applications. Please go to my youtube channel, watch other videos and subscribe. I am happy and I love you.

gbadexy:
I think density answers the law of flotation better.
It's what I was grappling to explain earlier.
Irrespective of whether hollow or solid, materials less denser than water would float on it.
The higher the mass to surface area ratio is i.e mass over volume or density, the more it would float over more denser materials.
A block of wax or even plastic would flat on water.
Same thing with gases.