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Anonymous users2024-02-08Gravitation is an interaction between objects due to the mass they have. Its size is related to the mass of the object and the distance between the two objects. The greater the mass of the object, the greater the gravitational pull between them; The farther apart the objects, the less gravitational pull there is between them.
The gravitational force between two objects that can be regarded as particles can be calculated using the following formula: f gmm r 2, i.e. gravitational force is equal to the gravitational constant multiplied by the product of the masses of the two objects divided by the square of their distance. where g represents the gravitational constant, the value of which is about minus 11 units n·m2 kg2.
It was measured by the British scientist Cavendish through a torsion scale experiment.
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Anonymous users2024-02-07Author: The owner of Mercury 4444 doesn't seem to be able to read it.
Let me explain it in the vernacular (the vernacular is a word coined by our Chinese teachers).
Gravity is the force generated by a mass (mass = weight) object that "pulls" surrounding objects to it. The greater the mass, the greater this force. In other words, you and the computer also have a gravitational pull, but the gravitational force is too small.
The earth certainly has gravity. Why do people fall to the ground when they jump off a building? Because the gravitational pull of the earth pulls us from the sky to the center of the earth, and then we fall to the ground.
The gravitational pull of the sun causes the earth to revolve around it all the time, creating a centrifugal force to counteract the gravitational pull of the sun on the earth
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Anonymous users2024-02-06Gravitational attraction is an interaction between objects due to the mass they have.
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Anonymous users2024-02-05The earth is a product of the great **, the earth has a liquid core of high-temperature lava, a core, a mantle, and a crust.
Why is the center of the earth hot? Some people say:
It is the decay of radioactive elements. For example, elements such as U, Th, and K have some radioactive isotopes, which produce a lot of heat when decaying.
It is also said that in the early days of the earth's formation, the geocentric pressure caused by the gravitational pull of the earth's material made the earth's temperature extremely high, leaving the entire earth in a lava state. As the heat is dissipated, the Earth's outer layers form a crust, but the temperature inside remains high.
There is also the sun's irradiation, the rotation of the earth, gravitation, and so on. The possibility of what they say is not ruled out.
The earth has gravity, and everything that has mass is affected by it.
When we jump upwards, it is very difficult, and horizontal jumps are much easier and farther than upward jumps.
So gravity is perpendicular, and everything is towards the center of the earth.
How does gravity come about? Is there a direct correlation with the internal temperature of the Earth's core?
Suppose that after the universe is large, at the beginning of the formation of the earth, the energy or some matter produced by the high temperature is accumulated. This aggregate is the center of the earth. ** The impact and the fact that there is no resistance to the universe and the influence of gravity make this aggregate rotate horizontally and vertically at high speed.
Suction is created during this process. Gravity. Just like a spin dryer, the center point is suction, which is a rotation in one direction.
When the object is constantly rotating, friction with the particles will produce heat, and the aggregate will continue to absorb the surrounding particles, continue to grow, and the temperature will gradually increase. After reaching a certain amount, the exterior gradually cools to form the core, mantle, crust and now the Earth.
The center of the earth has always been in a liquid state due to high temperature, and the center of the earth rotates at different speeds in the transverse and longitudinal directions at high speeds, driving the rotation and revolution of the earth. Just like a certain decompression artifact, the fast speed of the inner ring drives the slow rotation of the outer ring.
For example, the moon and other explored planets have a slow geocentric rotation, with the earth orbiting for 24 hours and the moon orbiting for 648 hours.
648 hours, 24 hours, 27 days.
The Moon rotates 27 times slower than the Earth, so the Moon's gravitational pull is lower. The Earth's core velocity will only be lower. If you want the inner ring of a liquid to drive the outer ring of a solid, the load required can be multiplied.
In addition to using technology, we cannot escape the gravitational pull of the earth, we are like its children and do not let us leave its arms!
If one day, you also want to fly. Let's find a stick together, and then, put it in, and get it stuck! Then I can fly [covering my face].
The above is a personal opinion, if I say something wrong, I have been afraid of pain since I was a child.
I think the gravitational pull of the earth is natural. Without gravity, anything in the universe would be zero. Because there is no such thing as an independent thing or the only thing, the existence of every thing in the universe depends on the existence of objective things, and this dependence is gravity. >>>More
The force of attraction between all objects with mass. This force exerted by the Earth on other objects is called gravity. The direction of gravity experienced by other objects is towards the center of the earth. >>>More
Any two objects in the universe, from celestial bodies to dust, have a force that attracts each other, so all objects on the earth are attracted by the earth. And because the forces between objects are reciprocal, we are actually attracted to the earth. >>>More
Because the vertical stability of the earth's gravity is generally recognized in our daily life, the earth's natural force, that is, the earth's gravity, is commonly known as the "earth's fixed gravity" (also to distinguish particle microgravity). The theory of studying the meaning, function, laws and characteristics of "the earth's natural force, that is, the earth's fixed gravity", is the "earth's fixed gravity", referred to as "the earth's gravity", which is the earth's natural force generated by the earth's material mass as a whole, that is, the earth's gravity, which occurs in and to the center of the sphere, also known as the spherical gravity. The natural force of the earth, that is, the energy of the earth's body (earth) and the earth's outer space (sky) reached by the earth's gravitational force, condenses in the direction of the earth's core, and this cohesion is carried out in a vertical downward way to stabilize the energy of the things it reaches. >>>More
In short, the rotation (rotation and revolution) of the earth