Rotating a balloon in vacuum

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Offline McKay

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Rotating a balloon in vacuum
« on: 07/04/2014 10:42:20 »
Will rotating a vacuum filled (empty) balloon in a vacuum fast enough make it expand and take an elipsoid shape?
If there ia an anomaly, a depression outwards (a "pimple", but not filled with anything - just the curvature) on the surface of the balloon, the centrifugal force wouldnt effect it in any way and it would just obey the tension of the balloon and flaten out just as if it ware on non- rotating surface?


Offline chiralSPO

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Re: Rotating a balloon in vacuum
« Reply #1 on: 07/04/2014 16:35:28 »
Even if the inside of the balloon is completely empty (or massless), the surface of the balloon must be made of something, and that something will have mass and inertia, so rotating the balloon will distort.