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Archimedes Principle Applications

Following are the applications of Archimedes principle:

Submarine:

The reason why submarines are always under water is because they have a component
called ballast tank which allows the water to enter making the submarine be in its
position under water as the weight of the submarine is greater than the buoyant force.

Hot-air balloon:

The reason why hot-air balloon rises and floats in mid-air because the buoyant force of
the hot-air balloon is less than the surrounding air. When the buoyant force of the hot-air
balloon is more, it starts to descend. This is done by varying the quantity of hot air in the
balloon.

Hydrometer:

A hydrometer is an instrument used for measuring the relative density of liquids.
Hydrometer consists of lead shots which makes them float vertically on the liquid. The
lower the hydrometer sinks, lesser is the density of the liquid.
Lactometer- to find out the purity of milk is also based on Archimedes’ principle.

Archimedes Principle Experiment

You can try an Archimedes principle experiment at home.

 Take a mug filled with water to the brim and place it in an empty bowl.
 Now take any solid object you like and measure its weight using a spring
balance. Note this down.
 Keep the object attached to the spring balance and submerge it in the water. Just
make sure the spring balance is not submerged.
 Now, note down the weight shown by the spring balance. You will notice that it is
less. Some water will be displaced into the bowl.
 Collect this water and weigh it. You will find that the weight of the water will be
exactly equal to the loss of weight of the object!

YOU TUBE LINKS:

https://www.youtube.com/watch?v=khc2wUBsFU4
https://www.youtube.com/watch?v=VwvGvf2gJOQ