What is the cause of motion of the earth's Spin?

Question

does that mean that space time also spins since the warping of it is considered gravity?

What cause the earth's spin to slow down?

Answer 1

The Earth keeps spinning because there are no forces acting to stop it. The solar system formed over 4 billion years ago when a cloud of gas and dust collapsed under gravity. As it collapsed, it began to spin. Some material eventually formed planets such as the Earth. The planets just kept this spinning motion.

Answer 2

Actually, the spinning of the earth slows down. Eventually, it will spin once in one year, like the moon does around the earth. The energy of the earth's spin causes the winds (with a little help from the sun's heat). The sun's heat causes air to rise in the tropics. The earth's rotation causes the air to spin in low pressure and high pressure systems and hurricanes.

You can see how fluid in a spinning object slows it down. Throw a milk carton into the air with some spin. Notice how a full carton stops spinning, whereas an empty one or a frozen one continues to spin.

Answer 3

The answer to your question lies in the formation of the earth.
The planetry disc around the sun, contained matter like dust, rocks, etc. This matter slowly came near due to mutual attraction (by gravitation), and this was also helped by supernova shock waves from nearby stars. A stage came, when the matter came very near, and every particle began revolving around the centre of mass of the system....the 'condensing' of matter into chunk continued...and this way earth was formed. SO, THE SPIN NOW IS THE SAME, (ALMOST) WHICH WAS WHEN THE EARTH WAS CREATED. the rotation of earth is due to the revolution of the constituent particles around centre of mass, at the time of earth's formation. This spin has been carried till now, because there is no resistive force to stop it down.

AND THE SECOND PART OF YOUR QUESTION-
The warping of space time depends only on mass of the body, and not on its motion. therefore, earth's spin will not spin space time. SPACE TIME IS TOO MUCH A FUNDAMENTAL CONCEPT TO BE ACCEPTED TO BE AFFECTED BY THE MOTION OF A BODY.It's warping depends only on mass.
(when i say motion, i mean a motion, whose velocity(in any way) is negligible as compared to light)

hope u understood it......

Answer 4

Something called "conservation of angular momentum". The earth has always been rotating, and that means it is going to keep on rotating forever. This is one of those fundamental laws of physics (deriving from Newton's laws) that nobody believes can ever be broken. However, the Earth's rotation can change slightly over time due to the tidal interactions with the Moon and Sun. To stop the Earth's rotation would require an enormous amount of energy, and whatever did it would probably have the same destructive power as the biggest asteroid that could ever possibly hit us. In other words, life would be destroyed. Not to mention that if the Earth under our feet quit moving, we would continue along at our current 17 miles/minute or 1000 miles/hour - can you imagine suddenly being launched out of your chair at 1000 miles/hour?

Answer 5

just like any object in space or 0g will tend to spin, it spins tocorrect itself, the correction is called for because the ineguality of weight through a material and once a spin is started the weight will stay so the spin will continue

Answer 6

It just does. It's gravity. It always has, and always will.

Answer 7

God.