What happens if I drilled a tunnel passing through the center of the earth, and jump into it? Bashny.Net

42 minutes polёta

you really want to get away from it all? The greatest distance at which you can get away from his house, while remaining in the world, is about 12,700 km, if you go straight down to the opposite side of the planet. But to get there, you have to make a big detour and go through the land and the sea about 20 036 km. So why not cut off the hook, and not go straight down?

Of course, this is a very dangerous journey. First of all, you have to go through 35, and then all of 70 km of the continental crust. Then you will go about 2,900 km of the Earth's mantle. Then have to pass through the outer core of the planet, which is about the size of Mars, and is composed mostly of liquid iron, the temperature of the melt is almost the same as on the surface of the Sun - 5500 degrees Celsius. Then you get to the inner, solid core size of the moon (although some researchers believe that the inner core is too liquid).



For argument (and survival), let's assume that the earth is cold, smooth, inert stone ball. While we're on it, let's ignore air resistance. On the surface of Earth's gravitational acceleration is 9, 8 m per second squared. This means that every second you fall down your speed will increase by 9, 8 m / c. But it will only be close to the surface of the planet. Gravity - is a function of mass and weight - a property of matter.

On the surface, all that is in the world is at your feet, but when you fall, and the approach to the core, your acceleration is reduced. In the very center of the planet your acceleration is zero, so that gravity will disappear and you become weightless. Halfway to the center of the planet your speed will be 24,000 km / h. Within 21 minutes after you jump to the tunnel it will be 29,000 km / h. After another 21 minutes you reach the opposite side of the planet, and for a brief moment hangs in the air. If you are at this point someone will catch, then you fall back into the tunnel, and everything starts over again. In the ideal case, we simulated this will continue indefinitely, as the swinging of the pendulum. And in order to fly through the tunnel and reach the opposite side of the planet, you will need 42 minutes.

But of course, the reality tends to intrude even in the most ideal thought experiments, and make them impossible. Interfere with the flight through the tunnel will be enormous pressure, temperature and monstrous, which will inevitably have to face "the experimenter».

via factroom.ru