Although such a thing is unlikely to happen in the next few billion years , the inquisitive mind wants to know! The earth rotates 1480.23 km per hour on its own axis. Keeps moving fast. If the earth suddenly stopped spinning , everything in our environment would be at the same speed as before. This will make your fan grow and you will fly in the sky! A little problem to understand ? Let's give a real example - let's say you are going somewhere by bus and your bus speed is 120 kilometers per hour. Suddenly a dog came in front of your bus and the driver braked hard to save the dog. As a result, you will all lean forward a lot. The position of the standing supervisor will be like catching the ball with a dive. The above incident is 120 km. It was for. But when it comes to 1480.23 km , it will not be pleasant. Now let's talk about what else will happen - when the rotation of the earth's own axis continues to decrease, the biggest bad effect will be on air travel. Most airlines use GPS , which carries data from GPS satellites. When the rotation of the Earth's own axis decreases , the satellite will not be able to adjust its position with the Earth , resulting in a plane crash. On one side of the earth (where the sun is) the amount of day will increase , and on the other side the amount of night will also increase at the same time. For which we will have normal sleep problems. There will be delusions , the muscles of our body will stop working , our brain will not be able to process information properly. Well , what if the rotation suddenly slows down without stopping ? When the rotation speed is 900-500 kmph. What will happen every hour ? At this time night will come after 10-13 days. Night will be 10-13 days , day will come again. This will result in the distribution of our mechanical energy. Rice wheat production will decline drastically , and our food dependence on this rice and wheat. The rotational speed of our earth keeps the water part of the earth in a shape , but as the velocity decreases the position of the water part (and hence) the shape will change ; All seas will continue to turn north and south. Our earth is made up of 3 layers as the speed will change and the inner layers will collide with each other to cope with this change. This resulted in severe earthquakes and volcanic eruptions. As a result of the continuous night, the temperature will drop to -55 degrees , which is 200 times higher than the normal winter cold. When the speed drops to 500-100 , the amount of day and night will be equal to about 720 hours or 1 month. People will begin to adapt to this temperature. Our Earth's magnetic field will continue to disappear and millions upon millions of people will die because of the radiation coming from space. Because , this magnetic field protects people from radiation coming from space. When the velocity is within 100-11 , the Earth's climate will disappear completely. All oceans will be divided into two parts, the North Pole and the South Pole. Thousands of miles of vast land will be created in between. More people will die from lack of food and lack of oxygen. If the velocity is 0-11, the earth is completely stationary , but it will still revolve around the sun and remain 6 months night and 6 months day. The temperature at the equator will be much higher than at the polar region. All hope of survival is over. 6 months of extreme heat and 6 months the temperature will be below -55 degrees. The human body will help him to adapt to this environment. This will continue until the sun becomes a "red monster".