Why do all objects fall down when they lose their fulcrum, and the person who jumped up is again on the ground? The answer to this question lies in the plane of the basic laws of physics and is explained by gravity (translated from Latin as “heavy”, “weighty”) or, in other words, gravity, an inherent property of matter. The essence of this phenomenon is that all bodies are attracted to each other. For example, the Earth with its gravity holds absolutely everything: trees, houses, people, water, etc. Thanks to gravity, we walk, rather than fly into the space of the universe.
What is the force of gravity, if it can neither be seen nor felt? The fact is that it is a very subtle interaction, depending on the distance between the objects, as well as on their mass. If the mass of the object is small, then its gravity, respectively, will be weak. Therefore, speaking of small items, we can say that it is completely absent. Even in such large bodies as mountains, the attraction is only 0.001% compared with the earth.
However, if we consider the stars and planets, the gravitational force becomes noticeable, because their size and weight are many times greater than what surrounds us. And the reason why all objects fall down is explained by the fact that the mass of our Earth is much larger than that of a person or some other object. IN
By virtue of this, the fallen sheet will appear exactly on the floor, and will not be attracted to some nearby body. Although gravity depends on distance (the closer the objects are located to each other, the stronger their mutual attraction), nevertheless, the mass of the planet has a more significant effect on gravity.
Now the question may arise: why do all objects fall down, but the moon does not? This phenomenon is explained by the fact that due to the constant motion around the Earth, it is held under the influence of gravity. Now, if the Moon stood, and did not rotate, then, like any other object, it would also fall in accordance with physical laws.
The principle of world gravity was discovered by the English scientist Newton. He was the first to prove its existence and influence on all objects of the Universe. It is this force that makes all the planets move around the Sun, man - to walk on the earth, and an apple - to fall down.
The law of gravity (it is also the law of universal gravitation) says: all bodies go to the center of the earth, while receiving acceleration of gravity. This discovery had a huge impact on the development of the exact sciences and on humanity as a whole. Thanks to it, scientists can determine with great accuracy the mass of satellites, planets, as well as the position of space bodies, automatic vehicles and the trajectory of their movement in the sky for several decades forward. This law explains why all objects fall down, why water does not splash out into space, and how the tides occur. In addition, it allows you to discover new universes not only by observation, but also by mathematical calculations.
