Why is not there a tidal locking from Sun to Earth? If there is it, when will it occur?

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Why is not there a tidal locking from Sun to Earth? If there is it, when will it occur?

2006-10-10 23:03:38 · 2 answers · asked by tinh n 2 in Science & Mathematics ➔ Astronomy & Space

2 answers

We have such a lock with our moon. It however does not occur with Sun. To get to the reason I have to get back to Newton's law of universal gravitation. Force=GmM/R^2.We observe here that compared to moon which is only 1/4 million miles away Sun is 93 million miles distant. Second the mass in question is the water body of tidal wave. A combination of these factors is responsible for such a lock not existing with Sun.

2006-10-10 23:16:43 · answer #1 · answered by openpsychy 6 · 0⤊ 0⤋

Not to worry, the sun will take us out before it's a problem.

http://astro.isi.edu/notes/tidallock.html

2006-10-10 23:08:23 · answer #2 · answered by madjer21755 5 · 0⤊ 0⤋