How much does the earth weigh? Detailed answer

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How much does the earth weigh? Detailed answer

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How much does the earth weigh?

Since the Earth is suspended in space, "weighing" it is not the same as putting an object on a scale. When we talk about the weight of the Earth, we mean the amount of matter that it is made of. This is called mass. The mass of the Earth is about 5,976 sextillion tons.

So that you can visualize what the number looks like, here it is: 5. How did scientists calculate that the mass of the Earth is exactly that. To do this, they used the principle that two bodies attract each other. It depends on the force of gravity.

Simply put, the law of gravity states that two bodies are attracted to each other with a force that depends on their mass and the distance between them. The larger the objects, the greater the force that attracts them to each other. The farther apart they are, the less this force.

To measure the weight of the Earth, you need to do the following: hang a small weight on a thread, then measure the exact position of this weight. Then a ton of lead must be placed next to the suspended load. An attraction will arise between him and the lead, as a result of which the load is slightly deviated to the side. (In reality, this deviation is less than 0,00002 mm, so you can see how accurate the measurement must be.)

After these measurements, scientists can use mathematics to calculate the weight of the Earth. They measured the earth's gravity in relation to weight, and they measured the force with which a ton of lead pulls a suspended load. The relative difference can be calculated, and it will tell about the mass of the Earth. What creates this mass? This includes a crust of hard rocks, then a layer called the mantle, which is also hard rocks and goes deep into 2880 km, then comes the inner part - the core (about 3360 km in radius). The core is liquid due to the high temperature at the center of the Earth.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which Auschwitz doctor conducted experiments on people, but during them he saved the prisoners from death?

The only one acquitted at the first Auschwitz trial in 1947 was Dr. Hans Münch. He was a member of the NSDAP and the SS, but turned out to be the only employee of Auschwitz who did not participate in the division of the arriving prisoners into workers, experimental subjects and "suicide bombers". Although Münch conducted experiments on prisoners, he tried to resort to various tricks to extend the experiments for as long as possible, and cause as little harm as possible. Thus, he saved many lives, since the experimental ones, who could no longer be useful, were sent to the gas chambers.

Test your knowledge! Did you know...

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