Why can t gravity be felt on Earth

The so-called gravity, in fact, is the attraction of the earth to the object, when people are stationary or horizontally moving, the attraction of the earth and the support force of the ground reach a balance, it is precisely because there is no feeling that it means the existence of gravity, when people do variable speed movement in the vertical direction, they will feel weightless or overweight, which is the result of the imbalance between the earth's gravity and the support force.

Because gravity and gravitation simply do not exist.

In fact, it is the four factors of weight, size, buoyancy, and density that determine the rise or fall of an object!

Neither gravity nor gravity exists. All that exists is weight, size, buoyancy, and density! These four elements determine everything.

If gravity exists, why doesn't the Earth attract haze? Is it just the apple that attracted Newton's head?

The reason is just that the smog is lighter than the air, right? The essence behind this is Archimedes' law, which has nothing to do with gravity.

Also, if gravity exists, why aren't any very massive objects being seen absorbing other small objects? Or do you see it circling around it? The pyramid is important enough, isn't it? Have you ever seen any small things on it?

The so-called gravitational force is only one component of the gravitational force between the earth and objects on the earth, and the other component is the Coriolis force, also known as the geostrophic deflection force.

How can you say that you can't feel it, gravity is there all the time, and if gravity suddenly disappears, then you are flying in the air and you are now standing on the ground.

Hello everyone, welcome to watch Xiaoyu talk about wonders. Gravity is one of the basic natural laws on the earth, and no one can get rid of the constraints of gravity, but some areas of the earth do not seem to be bound by gravity. Little Fish Today's Keywords: 5 Mysterious Areas Without Gravity.

You can feel it when you jump down from a height.

Astronauts are weightless in space, not because of how high they are above the ground, but because the gravity they feel is all supplied to the centripetal force that orbits the Earth. Even on the ground, as long as you can reach the first cosmic velocity, which is kilometers and seconds, you can fly close to the ground without falling, so you are weightless. Of course, because there is a thick layer of atmosphere on the ground, running at such a high speed will be affected by strong air resistance, and even like a re-entry aircraft, it will rub heat with the air and soon burn out.

So, if you could erect a long ladder to lead to space, how high would you have to climb to be weightless? At the end of the day, it's a matter of speed. Although the ladder is stationary relative to the Earth, the Earth itself rotates in a 24-hour rotation, so the "stationary" ladder is actually slowly rotating around the Earth.

To review the centripetal force formula, the centripetal force is proportional to the radius of motion with a certain angular velocity. So, as long as you climb to a sufficient height, there is indeed some degree of weightlessness. In fact, if the ladder were built at the equator, you would have to climb to an altitude of about 36,000 kilometers and you would find yourself suspended in space – which is exactly the height at which the geosynchronous orbit is located.

If the ladder is not built on the equator, but on the poles of the North and South Poles, let's say, then no matter how high you climb, there will be no weightlessness. Why is this happening? Maybe you can think about this question for yourself.

Of course, the higher you climb and the farther you get from the Earth, the Earth's gravitational pull will become smaller and smaller, but it will never decrease to zero, because the range of gravity can be said to be infinite.

In short, gravity exists, it is a long-distance force that will only get smaller and smaller, tending to 0

No, you are not right, gravity is a derivative of gravity to put it bluntly, and gravity will arise between any object with mass, and the gravity we often talk about is actually based on the gravitational force of the earth.

It's easy to be deceived by the sight of astronauts "swimming" freely in spacecraft: they really don't seem to have any weight. The exact opposite is true, they are in free fall.

The crew and the spacecraft are flying in orbit, that is, they are moving around the Earth, and if that speed does not reach the first cosmic velocity, the spacecraft will be pulled back to Earth by gravity and is falling towards Earth. So the orbit is possible precisely because of gravity, not because there is no gravity.

When the spacecraft reaches the second cosmic velocity and departs from the gravitational attraction of the earth, it can float in space, at this time the gravitational force of the earth is minimal, but it cannot be said that there is no weight, but there is no mass object around, the gravitational force is very small, and the perception is not very obvious, at this time, the spacecraft will also be affected by the gravitational pull of the sun, like the earth and other planets revolving around the sun, only when it reaches a certain speed will it not be slowly attracted and swallowed by the sun, once the spacecraft reaches the third cosmic velocity, That is, it can break away from the gravitational circle of the sun.

So it's not that there's no gravity in space, it's just small.