Archimedes principle :
It is the physical law of the buoyancy discoved by the ancient
greek mathematician and inventor Archimedes stating that any body
completely(or) partially submerged in a fluid (gas(or) liquid) at rest is acted
upon by an upward as buoyant force the magnitude of which is equal to the
weight of the fluid.
Example - The Battleship
let's use a battleship as an example.A battleship is made of steel.right about now,you may be saying,'but steel doesn't float!' So how is it a battleship can float ?
Look at the image of the battleship.Now imagine drawing a line where the water comes up on the hull of the ship.Then,fill the ship's hull with water up to that line.
How much do you think the water would weigh? If you said 'a lot,' you're right.It would actually weigh as much as the entire ship!
The weight of the water to fill up the hull of the ship weighs the same as the ship, so the water applies a buoyant force up on the ship with this much force. therefore, the ship made of steel floats!
Example - Ice Cube
let's look at another example. If you put an ice cube in a glass of water, the cube floats because ice is less dense than water, So, the ice under water displaces that volume of water.
let's use a battleship as an example.A battleship is made of steel.right about now,you may be saying,'but steel doesn't float!' So how is it a battleship can float ?
Look at the image of the battleship.Now imagine drawing a line where the water comes up on the hull of the ship.Then,fill the ship's hull with water up to that line.
 |
| Floating Battleship |
The weight of the water to fill up the hull of the ship weighs the same as the ship, so the water applies a buoyant force up on the ship with this much force. therefore, the ship made of steel floats!
Example - Ice Cube
let's look at another example. If you put an ice cube in a glass of water, the cube floats because ice is less dense than water, So, the ice under water displaces that volume of water.
No comments:
Post a Comment