Quote:
|
Originally Posted by Ken G
It doesn't change at all due to the coriolis effect, that's what the coriolis effect is for. But one effect that does affect its precession (not its tilt, by the way) is the torque on the Earth/Moon system due to the Sun's gravity. This is an effect very similar to what you are talking about, Chineson, but all it does is change the rate that the orbital plane rotates due to the coriolis effect in the co-orbiting frame. This causes "precession of the nodes". There is also a precession of the closest and farthest points of the Moon's elliptical orbit, due to torques on the noncircularity of he orbit. But none of these change the tilt.
|
I know the reason why you all say that the coriolis force would exert an opposite effect in this issue now. You all might have misunderstood the situation that I referred to.
First, we know that coriolis force is a fictitious force, so it can be explained in other ways. Now I would explain more clearly but still with the coriolis force concept.
I have supposed a model that the moon is rolling on the surface of the sun. Please note, the moon undergoes the coriolis force because it is circling the sun, not because it circles the earth. There friends said rolling is not flying. In this issue, the effect is the same. How do you define flying? Do you confess that the air is flying over the earth? If yes, please ask the meteorologist whether the coriolis force affects our atmosphere. Our atmosphere is strongly affected by it.
Now someone may say, coriolis force on earth has right the different effect on the running object to what you applied it to the moon. If you say so, we are talking two different things.
Coriolis force to the moon comes from its revolution around the sun, not from the earth. Our earth rotates counterclockwise and creates coriolis force to the running things crossing its equator , yet as for the moon, this direction is relatively opposite.
We know motion is relative. The moon revolves the sun counterclockwise. We can also look it this way: The sun rotates clockwise to the moon.
Now the moon is repeating the motion crossing the sun's equator. This motion is right the way of a north-south running river, only that the sun's rotation is relatively clockwise to the moon but the earth's rotation is counterclockwise to the river. They get opposite coriolis force effects.
Coriolis force is a fictitious force,anyway. But I have also explained its effect that I discussed in my article in other way. Both are coincident.