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I'm going to back the responses up a bit to one by JudgeJ, and the claim that gravity is stronger at the poles (because they are flattened). If this is inded true, and is the claim that the poles experience less rotational velocity for they cover less area over the same time as all other points on Earth, how does this discrepency reveal itself? More gravity acting on bodies at the poles, but less rotational velocity that is acting to oppose (conflicting with) this force of gravity (sic)?
That was my orginal question. Through the conceptualization of terms in responses, we could return to it. First an easy one: Are there there different forces (i.e. mechanisms, concepts, lack of better term) acting on things (bodies of various sort) at different points on Earth? Are they not so miniscule as to produce viable, apparent differences (in biological and/or physical terms)?
I just think of the great force of gravity suppressing everything at all times, and its conficting counterpart - rotational velocity. It seems to me there must be a synergistic effect of some sort. No?