Question

what is archemeds principle

Answer 1

Archimedes principle states that:
When an object is partially or fully immersed in a liquid it experiences a buoyant force (or up thrust) which is equal to the weight of the object displaced by the liquid.

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Answer 2

Hey!

Archimedes principle states that the upward buoyant force applied on any body immersed completely or fully in any fluid is always equal to the weight of water displaced by it.
This law is fundamental to fluid mechanics.

Activity on Archimedes principle- [w= weight]

• Take a metal cylinder and suspend it from spring balance and record it's weight in air as w3.

• Take an overflow can, fill it with water up to the spout and also take a beaker, keep it on the weighing scale in such a way that the mouth of the spout is above the beaker.

• Now immerse completely , the cylinder suspended from the spring balance into water taken in overflow can.

•As the cylinder is immersed in the water, it displaces an equal volume of water which overflows into beaker.

•Record 'w' of the cylinder when immersed in water as w2 and also record 'w' of displaced water as w3.



Calculation-

w1=20N
w2=18N
w3= ?

w3=w1-w2
w3=20-18
w3=2N

Result- From the above experiment, we find, loss of weight of an object when immersed in fluid. Ie- The buoyant force is equal to the weight of the fluid displaced which verifies Archimedes principle.

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Applications of Archimedes principle-:

• Used in designing ships.
• Used in designing submarines.
• Used in lactometer which is used to determine in purity of milk.
•Used in hydrometer to find density.

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