What is the principle of astronauts being able to float

The reason why the astronauts dare to be weightless is not that gravity is useless, but gravity does centripetal force, so it is as if gravity is not felt, and it can be equivalent to an inertial system (an ideal state that is not subject to any force). As for "floating", it is actually the result of the action and reaction forces of the astronauts and the space orbital module.

Weightless, the reason why people fall to the ground is because of the gravity of the earth.

And the astronaut is farther away from the Earth, the gravitational force is much less, and the only remaining bit acts as the centripetal force for the astronaut to revolve around the planet, so he floats!

It is because the gravitational pull of the earth on him is completely used for his centripetal force, so there is no decomposition of gravity, and naturally he floats there. He's floating there and has been circling the earth.,This requires centripetal force.,The landlord should know this.。

You see where it is. If it is in outer space, the gravitational pull of the planets is so small that it has almost no gravity, so it can float up with the initial state of motion and the traction of the leash.

You can think of it this way: because there is no gravity pulling him down, so it floats up ...

To put it simply, it can be understood this way.

It doesn't work on any principle.

Anything that is in that state will float.

There's no gravity!

Gravity is all used as a centripetal force, so they become weightless.

Astronauts fly into space to examine the effects of weightlessness on the human body, conduct microgravity experiments, and conduct life science and biotechnology experiments. Examining the effects of weightlessness on the human body This study will help to understand the impact of the space environment on the human body, and to develop and use space resources for mankind to achieve longer space travel.

Since the realization of manned spaceflight, astronauts have studied the physical laws in the process of material processing under microgravity conditions in space, produced many new materials, and at the same time, the research on space material processing technology has also been developed rapidly.

A series of biological experiments conducted by astronauts in Qi Zi's blind space are mainly biosphere studies on the study of biological substances, energy circulation and regulation.

Gravimetric biology studies of the use of microgravity to promote life processes and how the microgravity environment affects the formation, function and behavior of organisms on Earth.

An astronaut, or astronaut, or astronaut, is a person who has made a career out of space flight or has flown in space.

The mission of astronauts is to complete the assigned tasks on the ground, to explore life beyond the earth, to explore space for future immigration, and to conduct military scientific experiments.

Astronauts usually have the ability to fly spacecraft on their own, as well as the ability to repair and improve independently.

Because astronauts are in a state of weightlessness in space, it means that people do not feel weight, and the human body will float in the air. This genus.

At that time, it's not that there is no gravitational force around at all, the spacecraft also has mass, and other people also have mass, and they (they) can also produce some gravitational attraction, plus the gravitational attraction of distant stars, but these gravitational forces are very small enough to affect the astronaut's floating.

Astronauts are in free fall relative to Earth, the ISS is in a vacuum, and gravity causes all objects to fall at the same rate, regardless of the mass of the object. If an iron ball and a feather are dropped on the surface of the earth, the feather will fall more slowly because of the air resistance, but space is a vacuum without air, so the iron ball and feather will fall with the same acceleration. And now experiments have proved it.

Astronauts can end their afloat state by attaching themselves to a chair with a hook and loop or securing it with a device similar to a car seat belt. To sleep, you need to enter a sleeping bag, which is attached to the inner bulkhead of the ship.

Although weightlessness in space is a very interesting and fun thing, astronauts also have to endure many physical injuries in space, and living in space for a long time will reduce bone density, and the brain will move upward. Future space travel and exploration activities will urgently require artificial gravity.

When the astronauts are in.

When copying space, the body is in a state of weight, and there is no tension such as tension, compression, shear, etc. In actual space flight, in addition to gravitational force, spacecraft will also be subjected to some non-gravitational external forces from time to time. In contrast to normal gravity, this phenomenon of microacceleration is called "microgravity".

On a spacecraft orbiting the Earth, both the spacecraft and the astronaut need centripetal force to maintain a circular motion. When the velocity reaches the first cosmic velocity and is able to fly around the Earth, gravity plays the role of a centripetal force. Although the astronaut is in the spacecraft, he and the spacecraft move in a circle, and they can move in a circle without force on each other.

Since there is no interaction force between the astronaut and the spacecraft. So astronauts can't feel where the ground is and where is the roof. It looks like it's floating.

Astronauts appear to have no gravity and float in space because they are in a constant freefall motion towards the Earth, because of their specialized horizontal motion of water. The effect of gravity decreases with distance, but it doesn't really disappear, gravity is everywhere, even in space.

The orbital movement of aircraft is possible precisely because of gravity, not because there is no gravity, and they are flying along the orbit, that is, they are moving around the earth and are falling towards the earth, so some aircraft will fall when they run out of fuel.

Because space and the earth are not the same, space has no gravity, even if it is a few thousand pounds of things placed too.

It also floats in the air, so the astronauts are floating in space.

Moreover, astronauts should be very careful when eating food, to avoid food or other items from leaking out, otherwise these may affect the operation of the spacecraft's instruments in the near future, and may be inhaled into the respiratory tract or even fall into the astronauts' eyes by space objects.

Astronauts float in space because space is in a vacuum.

On the earth DAO, the astronaut version is in free fall on the earth due to the action of gravity, and in space, due to the special distance from the earth, the effect of the earth's gravity is very weak and almost negligible, so the astronaut has been floating in space.

Because in space, human beings do not feel any gravity and are in a state of weightlessness, so they will float in space.

Because people are weightless in space, they don't feel their weight at that time, so they float in the air.

This is common knowledge in physics, because people are in a state of total weightlessness in space, so they will float in space.

The weight of the object comes from the gravitational pull of the earth to the object, and the astronaut floating in space loses the gravitational pull of the earth, and without weight, the rocket relies on strong power to break away from the earth and send the astronaut into space, which is out of the gravitational force of the earth.

Because space is not the same as the earth, there is no weight in space.

Bai force, can only float in the air, you.

Du thinks about the feathers that are blown by the wind, is it because the dao is too light to blow up, and what if it is the weight of a person? Ordinary winds can't blow.

There is no gravity in space, which means that everything has no weight, so it can only float.

Because there is no gravity in space, astronauts are floating in space.

First of all, complete weightlessness is the apparent weight of the object copy the body is zero, that is, the object is free falling.

When you weigh the weight of the body, if you weigh it, it means that the object and the contact surface are not affected by each other.

And the phenomenon you mentioned is caused by the different references you choose. For example, when a person takes an elevator on the ground, a state of complete weightlessness occurs, if you choose the elevator as a reference, there is no force between the person and the elevator, and the person is floating in the elevator in a sense, if you choose the center of the earth as the reference, the person is in free fall relative to the center of the earth;When a person is in space, if you choose the capsule as the reference, the person will float relative to the capsule, and if you choose the center of the earth as the reference, the person will move in a circle relative to the center of the earth (gravity acts as a centripetal force).

The reason for the float is the balance of centrifugal force and gravitational pull of the earth. In fact, man has not yet escaped the gravitational range of the earth. Edition.

The space station in space always rotates at high speed around the earth's power ball, at this time the space station will produce a centrifugal force, and the earth will also produce gravity on the space station, the reason why this gravity will always exist, but the farther away from the center of the earth, the smaller the gravity, at this time gravity and centrifugal force balance each other, so the astronaut is floating in space.

Thousands of years later, these bodies drifted to other planets and gave birth to life.

Because in space, human beings can't feel gravity and are in a state of weightlessness, so they will float in space.

This zhi is physics common sense, and if you have a dao in junior high school to study well, you generally know what the reason is. Phenomena like weightlessness and overweight can often be encountered in our lives.

For example, taking the elevator and crossing the bridge by car.

Because of weightlessness, the reason why we can walk and live on the earth is because of gravity pulling us, if not, we will also float there.

Right in the air. Astronauts are the same in space, because they have no attraction and are floating in the air.

The feeling of floating in the air, you can recall, the feeling of going to the playground to do a jumping machine, and the whole person is half-suspended from the seat when descending.

Weightless, there is no gravitational pull, so people look like they are walking.

Is there gravity in space?If so, why do meteor showers fall?Meteorites will fall on Earth.

We are here on Earth.

He came because he was led by all things.

Self-reliance, that is to say.

The effect of gravity.

Gravity decreases with increasing altitude. Spaceships and astronauts, once out of the earth, are affected by gravity very little, so they will feel light, which is what we often call weightlessness, and will naturally float in space.

There are 12 astronauts floating in space. There are 12 astronauts floating in space, namely Yang Liwei, Fei Junlong, Nie Haisheng, Zhai Zhigang, Zhenyunzhou Liu Boming, Jing Haipeng, Liu Wang, Liu Yang (female), Zhang Xiaoguang, Wang Yaping (female), Chen Dong, Tang Hongxian Wu Bo.