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OT: Dyson's Disaster

From:Anton Sherwood <bronto@...>
Date:Wednesday, December 5, 2001, 8:01
> Lars Henrik Mathiesen wrote: >> And once the sun moves off center I think the nearest part >> of the structure must flex towards it, which will cause a >> net force to make it move even more.
Andreas Johansson wrote:
> Actually, displacing the sun from the centre won't change anything > (except the depth of your tan!) for the same reason that it won't be > any force from the sphere on the sun. . . .
But there is a force from the sun on each part of the sphere. The forces are globally balanced, but the local mass doesn't know that. ;) If the sphere is infinitely rigid, of course, that's not a problem. -- Anton Sherwood --