Why does the rotation of the space station create gravity

Theoretically, the centrifugal force of a rotating object is utilized.

Like on the space station.

in plants due to the lack of gravity.

As a result, there is a lack of directionality in growth, so scientists use rotation to simulate gravity, so that plant growth has directionality.

In the same way, the rotation of the space station can be regarded as a small room, and at a certain radius and a certain velocity, the space station will generate gravity.

The force exerted on an object due to the attraction of the earth is called gravity. The object of gravity is the center of the earth. The direction of gravity is always straight downwards.

The gravitational force experienced by the object is proportional to the mass of the object, and the calculation formula is: g=mg, g is the proportionality factor, the gravitational force is about, and the gravitational force changes with the change of latitude, indicating that the gravitational force of an object with a mass of 1kg is. The point at which gravity acts on an object is called the center of gravity.

The space station rotates with the Earth, and the speed at which the space station operates is only related to the orbital altitude. It rotates counterclockwise from the north pole and clockwise from the south pole. The Earth's axis of rotation is angled to the ecliptic plane, perpendicular to the equatorial plane.

Earth's rotation is an important form of motion of the Earth, and the average angular velocity of the rotation is in degrees and seconds.

The linear velocity of rotation at the Earth's equator is 465 meters and seconds. It takes 23 hours and 56 minutes for the Earth to rotate around and increases or decreases by 3 to 4 thousandths of a second every 10 years. The earth rotates at the same time, and it takes 23 hours, 56 minutes and 4 seconds to rotate around in one revolution, and the revolution is about a degree, which is equivalent to 3 minutes and 56 seconds according to the speed of the earth's rotation, and the time, rotation plus the time taken to rotate is 24 hours.

Change in the speed of rotation of the Earth

1. Long-term slowdown. This change increases the length of the day by about 1.2 milliseconds in a century (about 1 second every 35,000 years) and slows the time measured by the Earth's rotation period by more than 2 hours in 2000. The cause of the long-term slowdown of the Earth's rotation is mainly tidal friction.

Scientists discovered hundreds of millions of years ago in the middle of the Devonian period, about 400 days a year on Earth.

2. Periodic changes. In the 50s of the 20th century, the analysis of astronomical time measurement found that the earth's rotation speed has seasonal cyclical changes, slower in spring and faster in autumn, in addition to semi-annual cycle changes. The amplitude of the annual variation is about 20 25 milliseconds and is mainly caused by seasonal changes in the wind.

The above content refers to Encyclopedia - Earth's Rotation.

Space station. The reason why it rotates is to create gravity.

For example, plants in the space station lack gravity.

As a result, there is a lack of directionality in growth, so scientists use rotation to simulate gravity, so that the growth of plants is directional.

One of the features of the space station is its economy. For example, all space stations do not have the function of returning to the surface, but instead host astronauts in space.

Conducting experiments can make the manned spacecraft a tool for transporting only astronauts, thereby simplifying the structure of the space station, reducing the difficulty of its engineering design and reducing the cost of spaceflight. In addition, the space station can be manned or unmanned during operation, as long as the astronauts start and debug it, it can continue to work as usual, check regularly, and achieve results at that time.

The space station has no gravity. The space station is due to the high-speed operation in space, and the centrifugal force is generated.

It happens to be the gravitational pull of the Earth on it.

offset, so that itself and all objects inside it, including astronauts, are not affected by gravity.

Since calcium is lost in the body's bones in weightlessness, the muscles also atrophy due to long-term non-use. Astronauts can't stay in space for too long, usually only a few weeks or months. Russian cosmonaut Polyakov set a world record for a person living and working in space for 438 days in a row, but this is almost the limit of humanity, he is on the space station.

In order to build muscles and prevent calcium loss, they do a lot of training every day (strapped to a spring on a treadmill), but when they return to Earth, they still can't stand on their feet. It takes a long time to recover.

The latest news of China's space station has attracted the attention of many friends, and it has also made everyone more and more curious about China's space, in this process we can find that the type of power used by different space stations is also different, and many people have found that China's space station does not use artificial gravity, so there are many people who are particularly curious about this and want to know what the reason is.

We all know that the earth we live on is full of gravity, and if human beings want to maintain normal activities and survival, then they are also particularly dependent on gravity, but after going to outer space, there is no impact of gravity, in this case, it will not only affect our survival, but also have a very large impact on our activities in outer space, so in this case, we must use artificial technology to generate gravity, in this case, we can ensure that we can carry out normal activities.

Through the above understanding, you can find that gravity is very important in the process of our activities, and because of this, the space station also needs to have enough gravity, and the most common gravity ** way is artificial gravity, but why does the space station not use artificial gravity?

We all know that artificial gravity is generated, mainly through the gravity generated by rapid rotation, but the fast-rotating space station is not suitable for us human survival, working in this space station can easily cause us to experience dizziness and nausea, and even direct coma, in this case it will not only lead to safety problems, but also affect activities, so artificial gravity, If you want to do this in this case, it becomes very difficult.

Because of this, in terms of gravity on the space station, we must use other more scientific methods, only in this way can we get better results, if we rashly use artificial gravity, then it is difficult for us to be satisfied, and it will also have a certain impact on the operation of the space station.

Because artificial gravity is not particularly mature at present, there are still certain problems, so in order to avoid some safety problems, this artificial gravity has not been used.

This is because China has not yet reached such high technology, and there is no such technology in the field of aerospace, so continuous efforts are needed.

Nowadays, man-made gravity is not very stable, and the cost of engineering is relatively large, the effect is not very good, and the cost is relatively high.

The main reason is that China thinks that it is difficult to develop in this direction, so it has changed to a different situation, which can save some of its strength.

When humans are on Earth, gravity provides the conditions for static measurement of body weight. However, there is no such gravity in space, and weightless astronauts will show 0 if they measure it with a scale.