If you leave the Earth, how far will it take to completely escape gravity?

The gravitational force exists in the force of attraction that arises between two masses of objects – between two masses of objects. This means that all objects in the universe attract other objects like stars, black holes, humans, smartphones, and even atoms. So why can't we see that we are being taken in billions of different directions?

The original formula describing the gravitational force between two objects was written by Isaac Newton. Since then, scientists' understanding of gravity has begun to evolve, but Newton's law of universal gravitation is still a fairly good approximation for the most part.

The gravitational pull between you and the Earth draws you to the center of the Earth, and this force you feel is your weight. Let's say this force is 800 Newtons, and this is what it would be like when you were standing at sea level. If you are floating in the Dead Sea, gravity will only increase Newton's force.

After reaching the summit of Mount Everest, gravity can reduce by a negligible amount. The higher you climb, the weaker the effect of gravity becomes, but it can't go away. We are safely tied to Earth, but we are subjected to the faint gravity of distant and near-Earth objects.

The gravity of the sun on you is about Newtons. Just a few meters away from your smartphone, the power of the micro-Newtonian between you is equivalent to the gravity of the Andromeda Galaxy. The Andromeda Galaxy is 2.5 million light-years away, but 1,000 billion times more massive than the Sun!

The gravitational force of a celestial body on an object is a function of the mass of the celestial body. Obviously, it is more difficult for objects to escape from more massive objects. The escape velocity of the Earth is naturally greater than that of the Moon, but less than that of Jupiter.

Jupiter, with its enormous volume and mass, has the largest escape velocity of any planet in the solar system.

The magnitude of the escape velocity is related to the mass of the celestial body, and this conclusion leads us to the problem of contradiction. When we launch a probe to a planet larger than Earth, the probe must carry a lot of fuel. Because the probe will need more fuel to take off from the detected planet and escape from the planet's gravitational field than Earth.

However, the extra fuel carried during exploration will become heavier, so it will be more difficult to escape from the Earth's gravity field by increasing the Earth's escape speed. We can infer from the equation that the escape velocity of a traveling star is independent of the mass of the object. This may seem a bit counterintuitive, but whether it is a dinosaur or a tortoise, in order to escape from the Earth, it must reach a speed of kilometers and seconds (if you ignore the air resistance), but the acceleration is a function of the mass of the object, so while the minimum velocity required to escape the Earth's gravitational field is the same, the acceleration process of a dinosaur is more difficult than that of a tortoise.

After leaving the earth, the gravitational force of the moon will be counteracted, which is the effect of centrifugal force, and we human beings cannot leave the earth.

Generally, there is no gravity when you reach the moon, and you can calculate it according to the formula of physics.

When you go to another planet, you can get rid of gravity, but you are still affected by other gravitational forces.

According to physical knowledge, everything on Earth depends on gravity to stay on the ground. Without gravity, all objects would be weightless and floating in the air. Of course, there will be no rivers either.

Rivers turn into small droplets, suspended in air and dust. Astronauts are also weightless in space. Everything in the spaceship is suspended if it is not fixed.

A person can fly into space with a slight jump, and there is no gravity and no return, and I am afraid that people will have to tie a rope or go through an underground tunnel when they go out. The air on Earth does not stay, it spreads out into space, and then there is no air for people to breathe. And also...

Humans have become accustomed to gravity on Earth. If the gravitational pull of the earth is lost, the human cardiovascular and cerebrovascular system and immune system will be affected. The risk of cancer will also be greatly increased. It can be seen how important gravity is to human beings, which we usually don't care about.

Hello, the distance required for an object to escape from the gravitational pull of the earth is equal to the height corresponding to the escape velocity of that object. The Earth's escape velocity is about kilometers per second, which means that if an object can fly away from the Earth at a speed of kilometers per second, it will leave the Earth's gravitational pull forever. According to this formula, an object needs to be at an altitude of about 36,000 kilometers above the elevation of the cavity to reach the escape velocity of the Earth and thus escape from the Earth's gravitational pull.

Therefore, if a filial land object moves at a sufficient speed at an altitude of more than 36,000 kilometers from the Earth, then it can break away from the Earth's gravity.

When the body reaches a speed of kilometers and seconds, it can break free from the shackles of the earth's gravity. In the process of getting rid of the shackles of the earth, under the action of the earth's gravity, it does not fly away from the earth in a straight line, but flies in a parabola. After breaking away from the Earth's gravitational pull, it orbits the Sun under the action of the Sun's gravitational pull.

To escape the gravitational pull of the Sun and fly out of the solar system, an object must move at a speed of 1,000 seconds. It will then fly away from the Earth in a hyperbolic trajectory, and it will fly away from the Sun in a parabola relative to the Sun.

Human space activities are not just about escaping the earth. In particular, the current application spacecraft needs to fly around the Earth, that is, let the spacecraft move in a circle. We know that there must always be a force equal in magnitude to the centrifugal force and in the opposite direction acting on the spacecraft.

Here, we can take advantage of the gravitational pull of the Earth. This is because the gravitational pull of the earth on an object is exactly in the opposite direction of the centrifugal force in which the object moves in a curvilinear motion. It has been calculated that when the speed of motion of an object on the ground reaches a kilometer second, the centrifugal force generated by it is equal to the gravitational pull of the earth on it.

This velocity is known as the orbital velocity.

The speed at which the object moves in a circle around the earth is called the first cosmic velocity; The speed at which the earth flies away from the gravitational pull of the earth is called the second cosmic velocity; The speed at which the sun is free from the gravitational pull of the sun and flies out of the solar system is called the third cosmic velocity. According to the law of gravitation, the magnitude of the gravitational force between two objects is inversely proportional to the square of their distance. Therefore, the distance of an object from the center of the earth is different, and its orbital velocity (first cosmic velocity) and separation velocity (second cosmic velocity) have different values.

When the velocity is reached, it can break away from the gravitational pull of the earth.

If an object is shot vertically upwards from the planet's surface, if its initial velocity is less than the planet's escape velocity, the object will only rise a certain distance, after which the acceleration caused by the planet's gravitational pull will eventually cause it to fall. The escape velocity of the Earth is.

Not at any distance. Theoretically, even if you are infinitely far away from the Earth, you cannot escape the gravitational pull of the Earth.

Gravitational force is a long-range force, and theoretically the distance is unlimited. Artificial satellites and space stations can fly around the earth outside the earth's atmosphere because they are also constantly moving forward, relying on the inertial force of forward motion and the earth's gravitational force (gravity) to balance to ensure that artificial satellites and space stations do not fall back to the earth. If satellites and space stations move slowly, they will also fall back to Earth under the gravitational pull of the Earth.

This velocity is the first cosmic velocity.

Spaceships are able to break away from the Earth's gravity and fly near other planets in the solar system because they are a little faster than the first universe and can only fly away from the Earth if they are constantly given power to overcome the Earth's gravity.

It depends on your own mass and the influence of other gravitational forces around you.

According to the law of gravitation, gravitational force is inversely proportional to the square of the distance.

The distance between the Moon and the Earth is very close, about 30 Earth's diameters, so although the mass of the Moon is not too large, the gravitational pull on the various particles on the Earth is relatively large. The mass of the Sun is very large, about 200 billion trillion tons, which is 330,000 times the mass of the Earth, but because the distance between the Earth and the Sun is too far, 400 times the distance between the Moon and the Earth, its gravitational pull on the Earth is only 46% of the Moon's gravitational pull on the Earth. So, the tidal phenomena on Earth are a combination of the forces of the Sun and the Moon, and it is enough to understand that the gravitational pull of the Moon is greater than that of the Sun.

The mass of the Earth is twice that of the Moon, so the common mass center of the lunar-earth system must be greatly biased towards the side of the Earth, and about twice the radius of the Earth from the center of the Earth, the two spheres rotate around this common center of mass every month. The gravitational force of the Moon is important to the Earth, but the amount of this gravitational force is not very large, equivalent to only one ten-millionth of the Earth's gravity. For a 10-ton object on Earth (i.e., gravity equal to 10 tons), the gravitational force is only 1 gram.

Such a small force is usually not felt by people. But the Earth's response to this small gravitational force is very obvious. It has long been discovered that the regular rise and fall of sea water (tides) in a single day is closely related to the moon.

In addition, the earth is not a rigid body, it is generally considered to be an elastic sphere, for a sphere with such a characteristic, under the action of the gravitational force, the earth's solid rock crust will also produce a "tidal" phenomenon, called a solid tide, which rises and falls by about 30 centimeters every day. Of course, the gravitational force of the Earth on the Moon is greater, and it causes the lunar crust to protrude and fall by about 3 kilometers. At the same time, the Earth's atmosphere, because of this tidal attraction, produces "atmospheric tides" every day.

As for the ocean, which is a huge body of water, the tidal phenomenon on it is even more pronounced.