Question

Archimedes principle full definition for 9th class

Answer 1

hii friend
here's your answer looking for

As this topic belongs to floatation , I want to tell first " what is upthrust? "

Upthrust or buoyancy :--The upward force exerted by the liquid or gas when body is immersed in it. So, this upward force is called as upthrust or buoyancy.

it depends upon two factors:-

1). the density of a fluid in which the body is immersed.

2). the volume of a body that is immersed.

So, let's know about Archimedes principal.

Archimedes principal :- This principal states that when any body is partially or completely immersed in a fluid then the upthrust or buoyant force will be equal to the weight of the fluid displaced by the body.

example :-take a container full of water. then dip any object in it that is tied with a string. then if you measure or observe the weight loss then that weight loss is equal to upthrust and that is also equal to the water displaced by that object.

but remember this that Archimedes principle is applicable on the fluid means gas or liquid.

some application of Archimedes principal are as follows:--

1). the lactometer that is used to identify the purity of milk is also worked on the Archimedes principle.

2). even the designs of submarine and ships I also designed by the Archimedes principle.

3). the hot balloons I also designed and set by the Archimedes principle.

4). hydrometer are also based on this Archimedes principle only. hydrometer is used to detect the density of liquids.

hope it's helpful to you

From brainly star Amaytripathi19

Answer 2

Heya friend,

Here is the answer:-

Actually this question is from physics (Gravitation Chapter-10) [Topic:- Floatation]

So now let me say about Archimede's Principle:-

What is meant by Archimede's Principle?/ State Archimede's Principle.

Here the answer is,

》 When an object is fully or partially immersed in a liquid (fluid), The object experience an upward force [buoyant force] which is equal to the weight of the liquid displaced by it.

Yet not understandable? Ok now let's discuss about Archimede's Principle with an example:-

~ So take a small piece of heavy object like pebble and tie it with an string.
~ Later suspend it by holding the string
~ Slowly dip the pebble inside the water [Fluid] which is kept in a container.
~ So after the pebble is dipped in the water there is a change in the water level.
~ To prove Archimede's Principle you should that the displaced water and the pebble apart and check their weight.
~ They both will be same because of Archimede's Principle.

Archimede's Principle has its own applications.

APPLICATIONS:-
1) Hydrometer to determine the density of liquids.

2) Designing ships and submarines.

3) Determining the relative density of a substance.

4) Lactometer to check the purity of milk.

Additional information about Archimede's Principle:-

> Archimede's Principle was formulated by a Greek scientist named "Archimede".
> After he discovered it this was subsequently named after him.
> He stated this after seeing that the water in a tub overflow when a weight objected is dipped.

Hope my answer helps you :)

Regards,
Shobana
^_^