Why do all objects fall down when they lose their foothold, and the person who jumped up ends up on the ground again? The answer to this question lies in the plane of the basic laws of physics and is explained by gravity (translated from Latin - “heavy”, “weighty”) or, in other words, by gravity, an integral property of matter. The essence of this phenomenon lies in the fact that all bodies are attracted to each other. For example, the Earth, by its force of gravity, holds absolutely everything on itself: trees, houses, people, water, etc. Thanks to gravity, we walk instead of flying away 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 objects, as well as on their mass. If the mass of an object is small, then its gravity, respectively, will be weak. Therefore, speaking of small objects, we can say that it is completely absent. Even large bodies like mountains have only 0.001% gravity compared to Earth.
Howeverif we consider the stars and planets, then the force of gravity becomes tangible, because their size and weight are many times greater than what surrounds us. And the reason why all objects fall down is due to the fact that the mass of our Earth is much greater than that of a person or any other object. B
the force of this, the fallen leaf will be exactly on the floor, and will not be attracted to some nearby body. Although gravity depends on distance (the closer objects are 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 movement around the Earth, it is held under the influence of gravity. Now, if the Moon were standing, not rotating, then, like any other object, it would also fall in accordance with physical laws.
The principle of universal 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, a person walks on the earth, and an apple falls down.
The law of gravity (aka the law of universal gravitation) says: all bodies are directed towards the center of the Earth, while receiving the acceleration of free fall. This discovery had a huge impact on the development of the exact sciences and on humanity as a whole. Thanks to him, scientists candetermine 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 ahead. This law explains why all objects fall down, why water does not splash into space, how the tides flow. In addition, it allows you to discover new Universes not only through observations, but also through mathematical calculations.
