The weight of the earth? How much does the earth weigh?

Huasheng News: British scientist Isaac Newton pointed out in the 17th century that the earth's orbit around the sun is affected by each other's weight, and the weight of the earth has been lingering in the minds of scientists. However, physicists in the United States have recently said that they have succeeded in finding an accurate way to estimate the Earth's weight, and that the Earth's true weight is lighter than previously estimated.

The foreign news quoted the new conclusion reached by physicist Gondlach and other scholars at the University of Washington in the United States that the actual weight of the earth is 5.972 times 10 square metric tons, that is, 18 zeros are added after the four numbers of 5972; It is different from the 21 square metric tons of 5.978 times 10 printed in the current textbooks.

In fact, after Newton deduced the law of gravitation, he could only guess the weight of the earth due to the lack of equipment to calculate the gravitational constant. Although later scientists determined g as the gravitational constant for calculating the weight of the earth, the method of measuring g was different, so the weight of the earth was also different.

Gondlach et al. recalculated this gravitational constant by recording the gravitational pull of four non-steel balls, modeled after the torsional balancing device made by scientists in the 18th century. "We believe that the current knowledge of the weight of the earth must be more accurate than what was previously known," Gondlach said.

Gondlach et al. will later present the study to the American Physical Society, and if the new findings are accepted, the gravitational constant g will be changed. However, the International Commission on Scientific and Technical Data (ICSD) has stated that they will not change the data until the findings of Gondlach et al. are validated.

Mass of the Earth: 1024 kg.

How to measure upstairs is written.

The mass of the Earth is 60 trillion tons. This is the mass of the earth as determined according to the law of gravitation. The determination of the mass of the Earth provides a reliable basis for determining the mass of other celestial bodies.

Earth is the third planet in the solar system from the inside and outside, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, about 100 million kilometers (1 astronomical unit) from the sun.

Peculiarities of the Earth.

The Earth rotates from west to east while revolving around the Sun. At present, it is 100 million years old, and there is a natural satellite - the moon, and the two form a celestial system - the Earth-Moon system. It originated hundreds of millions of years ago from the primordial solar nebula.

The radius of the Earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40075 kilometers. The Earth's surface area is 100 million square kilometers, of which 71% is oceans and 29% is land. The main components of the atmosphere are nitrogen and oxygen, as well as small amounts of carbon dioxide and argon.