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Lifting and support

Today's science

By Binod ChhetriPublished 2 years ago 6 min read
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Archimedes

Why a great invention?

The concepts of buoyancy and levers are the foundation of qualitative science and engineering. This is the first step in knowing the relationship between the physical world around us and expressing it mathematically. The beginnings of innumerable inventions in the field of engineering and science started from these two inventions.

How did the invention happen?

About 260 BC, Archimedes, 26, studied astronomy and geometry at Syracuse, Sicily. One day, he was attracted by the play of four children who were playing a game on the beach. They had placed a large balance on the top of the high stone. One child was sitting on one end of the board and the other three were jumping hard on the other side. The lonely child would fly in the air and fall on the sand.

Again, three children were sitting on one side of the hill. On that side, the plank was small. While the three were sitting, the board would touch the sand. Flak line on the other side Would be and would be lifted towards the sky. When one child jumped on the board, the other three children fell in the air and fell on the sand. Archimedes was impressed by the game. How could a lowly child lift three overweight people to the sky? He theorized it decided to do. 

Archimedes made long wooden ropes and wooden mats. He made three wooden poles to hold the rope. Just as children play with three on one side and three on the other, Archimedes learned how much weight can be lifted by placing a small wooden handle on one side and a little on the other. From this experiment he developed the mathematical concept of levitation, which is now being used as a basic system all over the world. 

Fifteen years after the discovery of this principle, King Heron ordered Archimedes to find out if the goldsmith had cheated in making gold. King Heron weighed the gold to make it a crown. The weight of the shripach made by the goldsmith was equal to the weight of the gold given by the king. However, the king suspected that the goldsmith had coated the outside with gold and kept the cheap metal inside. Archimedes was allowed to examine the gold on the condition that it would not spoil the crown. 

It was almost impossible. One day Archimedes was taking a bath in a public bathroom. He saw his hand floating in the water. An empty thought arose in his mind. He dipped the whole of his hand under the water. Great joy came but still the hand was pushed over the water. He stood still in the tub, the surface of the water said at the bottom of the tub. He sat in the tub again, The water level rose again. 

He slipped into the off tub. The water level rose even higher. He felt like he was going underwater. He got up and stood still. The water level dropped again. He gained weight, that is, he felt as if he had lost weight. Light 

He placed the same size stone and wooden mat in the tub and dipped it in water. The stone sank into the water but became lighter than before. The wood itself had to be pressed to sink. This means that the amount of water that rises above the surface when a force is applied depends on the size rather than the weight of the object. How much density there is is related to that. The object falls into the water, of that object After this incident, Archimedes approached the king, saying that he could give a satisfactory answer to the king. The main thing was the density of the object. If the shripach is made of a metal other than gold, its weight is equal but its density is different and it can also vary in quantity. 

He dipped Sripech and the same amount of gold in Batuka water. Shripech displaced more water than gold. This confirmed that there was adulteration in Shripech. The important thing is that Archimedes supported (buoyancy) theory invented. 

interesting fact 

 After discovering the principle of Archimedes' support, Eureka came out while taking a bath. Eureka shouted, which I found out. Eureka when gold miners first found gold. Well, at least I didn't go down without explaining myself first. 

 Archimedes, who was researching levers, once said, "Give me a place to stand with the daho, I can rotate this earth." This is how Archimedes sought to explain the practical use of elevators. Archimedes believed that the earth could be rotated if there was space to support it 

We hear the word gear a lot nowadays. The words 1 gear, 2 gear, 3 gear, 4 gear, 5 gear are used a lot when driving a car or motorcycle. If a new person is learning to ride a bike, he is taught how to ride a bike slowly in 1 gear. The higher the gear, the faster the bike runs. Since when has such gear been used? Or what was it used for? Is it to be used only on cars, bikes or is it started to be used on cars and bikes by learning the usage of other places? Gear (rqms) was used in India and South Asia around 2600 BC to open and close the doors of temples and to draw water. Aristotle describes the use of gear around 400 BC. In 240 BC, Archimedes discovered a worm gear inside a wheel. In the 40's BC, Vitruvius discovered how gears create motion, and in 1300, clock and church clocks were used. Gear was used. The name of the gear used in the watch is pendulum. Used in washing machine, electric mixer can opener, CD / DVD drive used in computer. 

Why is it easier to lift a stone in water? Because the density of the stone is higher than the water, the stone sinks in the water, but because the water acts as a buoyant, the weight of the stone is reduced. And, lifting a stone under water lightens it. 

• A small steel sheet sinks in the water, but why doesn't a 50,000 ton ship sink? Because steel sheets are small, they cannot displace water at their density and sink. However, because of the size of the ship, the ship can displace water equal to its density, that is, 50,000 tons of density, so that the ship does not sink in the water. 

 Half of the hippopotamus body is under water and half is above water. It is 3 meters long and weighs 10,000 pounds. But, does it reach the bottom of the sea? The density (weight) of the hippopotamus floats out in water that is less than water. You can't even swim fast and eat the food at the bottom of the sea. As a result, the hippopotamus releases air into its body, making it more dense than water, and eats weeds to the bottom of the ocean.

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About the Creator

Binod Chhetri

Name: Binod Chhetri

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