When it would Being amazing for people to be able to live in space, the “weightless” environment presents some challenges. Humans function best on Earth, where they are affected by constant gravity. Without it, there are well-known effects of long-term microgravity, including bone loss and muscle atrophy.
So if we want to live in space, we need to create a natural gravitational field. We have only one way to do this: Build a car that always goes fast. The most popular idea is to create a spaceship that orbits. But it is not as easy as it sounds. That is why.
First, let’s talk about the basics of gravity and what it means to feel your weight.
Gravity is the attraction between objects that have weight. Since your body and the Earth are mad, there is a beautiful force that pulls you to the Earth and holds you down. Even though this force is working on you all the time, you don’t feel it, because the Earth pulls at the same time. everything parts of your body, causing undetectable effects.
I know what you’re thinking: “I’m sitting here in this chair, and I can feel my weight.“Actually, what you’re feeling is not gravity. It’s the force of the chair (and the ground) pushing down on you.
We can better understand the concept of apparent weight by taking a quick trip in an elevator. The elevator starts at rest. But when you press the button, it starts moving up. This means that it has to have an elevator – for a very short time, until the elevator is up to speed. During this ascent, you feel that you are getting heavier. Then when the elevator gets close to the intended floor, it should slowly descend. This means that it runs downwards. During this time, you feel light.
But, of course, your actual weight has not changed. Your actual weight is a measure of the amount of gravity on your body, and is the result of the relationship between your weight (m) and the weight of the Earth and your distance from its center. On Earth, gravity has a force of 9.8 newtons per kilogram. (Mass and weight are different things, so on a world with different gravity, your weight may be different, even though your weight may be the same.)
Taking the elevator doesn’t change any of these things. What changes is yours visible weight. It’s a little strange, but this is very useful for pilots.
Let’s imagine that you are in space where there is no gravity—or even in low Earth orbit, where there is microgravity, which is the name we give to a “weightless” environment. What if your ship has a giant elevator that just goes up? If the acceleration of the elevator had the same value as gravity, your weight would feel the same as it does now.
Of course, a spacecraft with infinite lift is impossible. It would be easier to just make the whole car go faster. This will increase the gravitational force. In fact, this is the first method used for science fiction ships In the sky.