|MadSci Network: Earth Sciences|
Hi - I read your responses to why we don't feel upside down on earth. You mentioned gravity and related forces. However, I think there must be more to the story. Consider a white dwarf w/ diameter of 1/2 city block. It'd spin rapidly and exert great centripetal force. However, I doubt that one would feel "right side up" if he were standing at the "south pole". It'd be too small. Or, consider a meteor a few meters long (and smaller...) that is a fragment of a white dwarf (and hence has GREAT density) and is spinning rapidly. However, There would clearly be an "upside down" feeling if one were to step onto the underside of the "rock". Finally, everything in the universe exerts gravity. Obviously, things w less density/mass exert less. But it's all relative. The moon exerts less gravity than earth. Did the astronauts feel less "right side up" when they were walking on the moon? I doubt it. That said, there must be something else affecting our "orientation" on earth that goes beyond gravity and centripetal force. The size of the planet must play a role. I would appreciate your comment on this. Thank you. Earl
Re: Please expand on why we feel 'right side up' on earth
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