In 1514 A.D Nicolaus Copernicus a polish astronomer postulated the theory, states that the Earth spins on its own axis and revolves around the Sun. Since then it’s a scientifically proved and well-known fact. later scientists were able to calculate that the Earth spins at a speed of about 1,000 miles per hour and orbits around the Sun at a speed of 67,000 miles per hour.
But have you ever wondered If Earth is revolving with such an enormous speed why can’t we feel that speed?
The answer lies in the nature of motion itself. We don’t feel constant motion. We only feel the motion when there is a change in speed or change in direction.
Think of yourself being on an airplane where it smoothly traveling at a constant speed and constant altitude you can unbuckle your seat go for a walk still you cannot feel the motion of the plain. The simple reason behind this is that you, the plain, and everything inside the plane is traveling at the same speed. In order to pursue motion, you have to look through the window or any sudden change in speed makes you feel the motion.
Just like we cannot feel the motion of the plan the gigantic space ride of Earth is also unperceived. Because spinning and orbital speeds of the Earth stay the same and constant with us, as a result, we do not feel any acceleration. Simply put, If Earth is rotating then we and all the things on Earth are rotating with it at the same speed. That’s the reason why we don’t feel any acceleration.
If there is any change in the orbital speed of the earth then we would certainly feel that motion.
So why does Earth spins so constantly without any interruptions?
Simply because there is no hindrance to the Earth from doing so. To grasp this we need to understand Newton’s 1st law of motion. According to this law- an object in motion will remain in motion until or unless acted upon by an external or unbalanced force. In other words, Earth will remain in the same motion or acceleration unless some force exerts on it.
Until then let’s enjoy the incredible journey of our Earth.