Stars and planets form as a result of the gravitational collapse of accreting material. Any net translational motion of that initial material is accelerated as its radius of rotation decreases. This is due to the same conservation of angular momentum principle that makes skaters and divers spin more rapidly when they bring their arms closer to their bodies. In its extreme, this effect can make collapsed neutron starts spin many times each second, creating the regular beat of pulsars as observed from Earth.
Once an initial spin was established for the Earth, the same conservation principle says that its angular momentum will continue unless it can be transferred to another object. With no significant frictional forces to allow that to happen, the Earth can continue to spin indefinitely without any further prodding.
Colliding with Mars? I don't think so!!!!!
2006-11-16 03:16:16
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answer #1
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answered by Basement Bob 6
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I actually have a 12 inch globe on my table, a variety of the Earth, and it has a stand which connects on the 'poles' and it has bearings so as that it turns freely. nevertheless, i will hear the rubbing and experience the grinding of the bearings. Our Earth has no stand and no bearings and there is not any grinding what-so-ever brought about in undemanding terms by using its turning. even though, the solar, different planets and exceedingly the Moon all have a gravitational pull on earth and the Earth is consistently being somewhat deformed by using this. those gravitational pulls are what reason our tides. you will locate and experience the tides. The land factors additionally upward push and fall tidally yet to a lesser quantity than the seas and you may wish gadgets to degree those movements. Our Earth has a dense liquid center it is many times, yet no longer precisely balanced. additionally, the tidal result works on it only because it does on floor issues. The circulate of the middle reasons differences to the Earth yet is many times undetectable devoid of gadgets. (btw - a factor on the equator rotates at approximately 1037 miles in keeping with hour and that throughout the time of undemanding terms equals 0.288 miles in keeping with 2d.) .
2016-12-30 13:22:05
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answer #2
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answered by kennan 4
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The angular momentum imparted to the Earth by the collision with a Mars sized planet 4.2 billion years ago. The rotational speed was originally about 19-20 hours but the tidal pull of the moon and sun has slowed it down to 24 hours. In the far future it will lock tidally with the moon and it will take 28-30 day for the Earth to rotate on its axis.
2006-11-16 03:13:52
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answer #3
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answered by Anonymous
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Well, the answer to your question starts way back with the Big Bang. Matter spun off of this original explosion (much like water spins in smaller circles when you swirl your hand through it). The Earth and other planets continue to spin unless acted on by an outside force.
2006-11-16 10:25:24
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answer #4
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answered by Arihant 1
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the gravity which is formed between the earth causes the earth to spin around on its axis,
therefore making us have day and night.
hope my answer has been useful
2006-11-16 03:12:35
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answer #5
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answered by Tom 1
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The majority of fat asses reside in the USA so with the off balance of weight the Earth spins like a top due to gravity:) LOL
2006-11-16 03:10:59
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answer #6
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answered by Anonymous
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Newton's first law of motion. An object in motion tends to stay in motion unless acted on by some external force. It started spinning as it was forming.
2006-11-16 05:53:07
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answer #7
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answered by Anonymous
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Our moon's gravitational field causes earth to stay 23.5 degrees inclined and gravitational field from sun causes planets to rotate and revolve. If planets stop raotating and revolving the suns gravitational field is enough to attract towards it.
2006-11-16 03:16:37
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answer #8
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answered by afk 3
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Inertia
2006-11-16 04:37:39
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answer #9
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answered by bldudas 4
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Plain and simple, conservation of angular momentum.
2006-11-16 04:29:48
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answer #10
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answered by Anonymous
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