The laws of physics, or Why do all objects fall down?

Why do all objects fall down when they lose their fulcrum, and the person who jumps 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 (in translation from Latin - "heavy", "weighty") or, in other words, earthly attraction, an inalienable property of matter. The essence of this phenomenon is that all the bodies are attracted to each other. For example, the Earth with its gravitational force retains absolutely everything: trees, houses, people, water, etc. Thanks to gravity, we walk, and do not fly off into the space of the universe.

What is the force of gravity, if it can not be seen or 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 the object is small, then the force of its gravity, respectively, will be weak. Therefore, speaking of small objects, we can say that it is completely absent. Even in such large bodies as mountains, the attraction is only 0.001% compared to the terrestrial.

However, if we consider stars and planets, then the gravitational force becomes tangible, because their size and weight are many times greater than what surrounds us. And the reason why all the objects fall down is due to the fact that the mass of our Earth is much larger than that of a person or from some other object. AT The strength of this fallen leaf will be on the floor, and not attracted to some nearby standing body. Although gravity depends on distance (the closer the 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, and the Moon - not? This phenomenon is explained by the fact that, due to the constant movement around the Earth, it is kept under the influence of gravity. Now, if the Moon stood, and did not rotate, then, like any other object, it would also fall according to physical laws.

The principle of global gravity was discovered by the English scientist Newton. He was the first to prove his existence and influence on all objects of the universe. It is this force that causes all planets to move around the Sun, a person to walk on the ground, and an apple to fall down. The law of gravity (it's the law of universal gravitation) says: all bodies are directed to the center of the Earth, while gaining acceleration of free fall. This discovery had a huge impact on the development of exact sciences and on humanity as a whole. Thanks to him, scientists can determine with great accuracy the mass of satellites, planets, as well as the position of space bodies, automatic devices 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 spill into space, as tides occur . In addition, it allows us to discover new universes not only by observation, but also by means of mathematical calculations.