# if the Earth's rotation was slowed down, would it naturally speed back up as it was before? [closed]

Fact: The Earth is rotating on it's own axis every 24 hours.

Question: If, for some reason I won't specify the current speed of the Earth and could slow it down(say by 5%). Will it speed up again back to its previous speed of its own?

Let's suppose the Earth's speed is decreased by 50%. Such that its period of rotation will be 48 hours. Would its period gradually return to 24 hours?

## closed as unclear what you're asking by Kyle Oman, John Rennie, yuggib, RedGrittyBrick, rob♦Jun 1 '15 at 22:27

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• I'm not sure what you're asking, specifically what you mean by "normal"? – Kyle Oman Jun 1 '15 at 16:08
• Are you asking, "if the Earth was slowed down, would it naturally speed back up"? – zeldredge Jun 1 '15 at 16:08
• I suppose what your asking is why 24 hours? Is 24 hours some kind of natural time-scale for the Earth's rotation, that it would return to if perturbed – innisfree Jun 1 '15 at 16:24
• I find this question pretty clear, though somewhat strange. – Walter Jun 2 '15 at 17:22
• what leads you to believe that Mars has a solid-liquid core? The preliminary searching I did indicates that we aren't sure if Mars has a solid or a liquid core – Jim Jun 4 '15 at 17:35