Give me a fulcrum, and I can move the earth. People think that heavy things are difficult to pry up, but one person said that I can pry the earth with a fulcrum, which gives people an incredible feeling. Give me a fulcrum, and I can move the earth. Who said that?

Give me a fulcrum, and I can move the earth. Who said 1 "Give me a lever and I can pry up the earth" was said by Archimedes, an ancient Greek mathematician and physicist. This sentence is a classic quotation of Archimedes, which has also been translated into "Give me a fulcrum and I can move the whole earth", exaggerating the principle of leverage.

Archimedes made outstanding contributions to science. He put forward the principles of buoyancy and leverage, made achievements in mathematics, geometry and calculus, and made some creations and inventions in astronomy and machinery.

There is an interesting story about this sentence. The king of ancient Greece built a boat for the king of Egypt, but the boat was too big to be put into the sea, so he asked Archimedes for help. Archimedes used the lever principle to make a pulley and lever. By pulling the rope, the ship slowly sailed to the sea, so everyone believed Archimedes' words more. In addition, Archimedes also solved the problem of false crown gold by using buoyancy principle.

This is a wise grasp, but also the precipitation of connotation.

You don't have to compare the advantages of others with your own shortcomings. You know, your strengths may never be matched by others! As time goes by, no matter where the clock of life pushes you, grasp yourself and find a fulcrum for your life, then your life will be full of charm and you will live a full life.

Give me a fulcrum, and I can move the earth!

Give me a fulcrum, and I can move the earth. Who said that? This is what Archimedes, an ancient Greek physicist, said, and it is about the principle of leverage.

Archimedes also put forward the lever principle in the book The Balance of Plane Figures. He first regarded some empirical knowledge in the practical application of leverage as "self-evident axioms", and then proceeded from these axioms, applied geometry, and obtained the principle of leverage through strict logical argumentation.

These axioms are:

(1) Hang equal weights at both ends of the weightless bar at the same distance from the fulcrum, and they will be balanced;

(2) Hang unequal weights at the same distance from the fulcrum at both ends of the weightless bar, and the heavy end will fall;

(3) Hang equal weights at both ends of the weightless bar with different distances from the fulcrum, and the far end will incline downward;

(4) The function of one weight can be replaced by the function of several evenly distributed weights, as long as the position of the center of gravity remains unchanged. On the contrary, several evenly distributed weights can be replaced by a weight hanging from their center of gravity.

Extended data:

"Give me a fulcrum, and I can pry up the earth!" This was said by Archimedes, who discovered the lever principle in ancient times.

Archimedes knew that if you use a lever, you can lift any heavy object with minimal force, as long as you apply this force to the long arm of the lever and let the short arm act on the heavy object.

However, if the great ancient scientist had known that the mass of the earth was so great, he might not have boasted so much. Let's imagine Archimedes really found another earth as a fulcrum; Imagine that he also made a lever long enough. Do you know how long it will take him to lift a weight equal to the earth, even if it is only 1cm? At least 30 trillion years!

Give me a fulcrum, and I can move the earth. Who said that? This is what Archimedes, an ancient Greek physicist, said, talking about the principle of leverage.

Archimedes (287 BC-2 BC12), a great philosopher, scientist, mathematician, physicist and mechanic in ancient Greece, was the founder of statics and hydrostatics and enjoyed the reputation of "the father of mechanics". Archimedes, Gauss and Newton are listed as the three greatest mathematicians in the world. Archimedes once said, "Give me a fulcrum and I can pry up the whole earth."

Archimedes established the basic principles of statics and hydrostatics. Several methods for finding the center of gravity of geometric figures are given, including the center of gravity of the figure surrounded by parabola and its parallel chords.

Archimedes proved that the buoyancy of an object in a liquid is equal to the weight of the liquid it displaces. This result was later called Archimedes principle. He also gave the criterion of equilibrium stability of a parabola rotating body floating in liquid.

The machine invented by Archimedes has a water screw for diverting water, which can pull the lever pulley machine for loading large ships and explain the earth, moon and day running model of solar eclipse.

But he thought that mechanical invention was lower than pure mathematics, so he didn't write a book on it. Archimedes also used continuous division to calculate the volume of ellipsoid, rotating projectile and so on. This method has the rudiment of integral calculation.

Extended data:

lever principle

Lever principle: A system that satisfies the following three points is basically a lever: fulcrum, force point and force point. The lever principle is also called "lever balance condition": in order to balance the lever, the two moments (product of force and arm) acting on the lever must be equal. Namely: power× power arm = resistance× resistance arm, which can be expressed as:

(F 1 stands for power, l 1 stands for power arm, F2 stands for resistance, and l2 stands for resistance arm).

King Havilon met another thorny problem: the king built a ship for Ptolemy, king of Egypt. Because it is too big and heavy, it can't be put into the sea. The king said to Archimedes, "You can even lift the earth, so it should be okay to put the boat in the sea, right?" Archimedes asked craftsmen to install a set of exquisitely designed pulleys and levers on the front, back, left and right sides of the ship.

Archimedes told 100 people to grab a rope in front of the big ship. He asked the king to pull a rope, and the ship actually slipped slowly into the sea. The king was very happy and announced in public: "From now on, I ask everyone to believe Archimedes no matter what he says!" " "