The earth is spinning, if the helicopter hovers in the air for 12 hours, will it reach the other side of the earth

Due to the needs of study, life and work, people often need to take various means of transportation to and from various cities. When riding a high-speed train or a car, it is often very boring, so some people will be curious, if we jump from the car and vacate on a high-speed train or car, will it hit the car body? Or, throwing an object from the front row of the high-speed rail to make it hang in the air, because the high-speed rail is always running at high speed, will it cause the object to hit or fall into the back row?

There is a similar question. As we all know, the earth rotates every day, and it takes about 23 hours and 56 minutes to rotate once. If a helicopter hovers in the sky, will it reach the other side of the earth after 12 hours? Regarding these issues, some people really try. Someone jumped into the air on the front row of the high-speed train, but did not hit or fall into the back row. The result seems to be different from what we imagined. Of course, if the helicopter hovers in the air for 12 hours, it will not reach the other side of the earth, but will remain above the same place.

These problems are actually common sense problems, which are known to normal people, but the logical thinking behind these problems is very interesting. Why do objects that are still in the air do not fall on the other end of the rotating earth, but fall in place? Today Let's take a look at these issues.

The earth is moving every minute and every second, there is no absolutely stationary object, all objects are in relative motion. For example, when you sleep at night, you seem to be in a state of complete stillness. In fact, we are following the rotation of the earth, and we will also revolve around the sun with the earth, but we cannot detect it.

Jumping on a high-speed rail, or a helicopter hovering in the air, all belong to the same inertial frame as the earth. As long as it is an object on the earth, it will be affected by the earth's gravity and rotate with the earth. So, whether you are jumping on a high-speed rail or a hovering helicopter, the final landing point is in the same place and will not change.

If you want to get rid of the influence of the earth's gravity, you must achieve the "second cosmic speed" and achieve true "levitation" without the earth's gravity. The first cosmic speed is called the "circumferential speed", which is 7.9 kilometers per second, and the satellites in space orbit the earth at this speed. The second cosmic speed is called "escape velocity", which is 11.2KM per second. If the aircraft reaches the second cosmic speed, it can escape the earth's gravity and enter the universe. If in the future human beings can create a helicopter that can travel in space, as long as it flies far enough away from the earth and hovers in the air for 12 hours, it will be able to reach the other side of the earth.

In reality, there are many phenomena that go against common sense. These require data calculation and scientific exploration to get the correct answer. With the continuous development of science and technology, maybe in the near future, the spaceship that escapes the earth's gravity and really hovers in the air will also be can be manufactured.