ICanSleepWhenI'mDead Posted August 1, 2019 Posted August 1, 2019 (edited) Well if the ball doesn't drag the medium with it, why would the earth drag the medium? Isn't the earth just a scaled up and much larger version of the ball? Right now, there is no air out in space 50,000 miles down range on the earth's current path, but by the time the earth gets there, there will be. The air will be there not because some sort of frictional forces "drag" the air along, but because the earth's gravitational field continuously pulls the air and the earth towards each other no matter what path the earth follows. If you kept the same ratio of earth berm height/earth diameter as baseball seam height/baseball diameter, won't they both act in much the same way as they are spinning? The ball doesn't know or care that the air through which it is spinning was at the ball's location before the ball got there. Why should the earth care whether or not the air through which the earth is spinning was at the earth's location before the earth got there? What matters is that the air IS there when the spinning sphere is there, not whether the air got there in advance. In both situations, isn't it the pressure difference right at the surface of the spinning sphere that causes the curved movement, regardless of how the air at that location got there? Edited August 1, 2019 by ICanSleepWhenI'mDead fix ttypo
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