I enjoy this site...the intellect astounding the earth is just spinning? correct?

Question

How many things have you witnessed
that just spinn, for years in the same position!?

Answer 1

What are you smokin'?

Answer 2

Not really sure what the question is. If you are asking why the earth revovles or spins. It is the result of conservation of angular momentum.

As our solar system formed, the nebula that was very large and vast began to collapse into a smaller and much more dense structure. Just like the classic example of an ice skater drawing her arms and legs closer to her body, the rate of her spin increases and so did that of the nebula from which our system formed.
Eventually it became a spinning disk of material from which the sun and the planets coalesced. The revolution of the planets retain that rotational motion.
As for the spinning of the planets on thier axis, that is primarily a result of thier formation in conjunction with that same conservation of momentum.
That does not mean, however, that they will not slow down. Tidal braking caused by the gravity of other planetary bodies (such as that which exists between the earth and the moon) will eventually slow the rotation of some planets.

Answer 3

If you are asking why the Earth keeps spinning without stopping, the answer is gravity. The gravity of the sun both holds the planets into their orbits around the sun and causes the spinning motion of the planets. The earth is constantly being pulled toward the sun but it's own gravity and the gravity involved in it's orbit around the sun is part of why the earth is spinning in the first place.

And why doesn't it stop? There's nothing to make it stop. As stated in Newton's First Law of Motion: "A body in motion tends to stay in motion unless acted upon by an outside force." There is no outside force to slow or stop the spin of the Earth.

On Earth when you spin a ball upon a surface it will evetually slow and stop ... why? Friction with the surface it is spinning upon. If you suspend the ball on a string, it is friction with the air that eventually slows and stops it. There is no atmosphere or anything else to cause friction to slow or stop the spin of the Earth or other planets.