- #1
Buckethead
Gold Member
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If I understand correctly, a massive enough hollow sphere rotating in space will rotate the minkowski spacetime inside the shell such that a pair of balls held together by a string and rotating around their mutual center and at the same angular velocity as the shell will experience no (or at least less) tension on the string. If this is correct, then would the following be true?
Imagine two such spheres and balls/string with a common axis of rotation. The spheres are co-rotating and the balls/string are also co rotating (and rotating with the spheres) and aligned so a ball of one is directly above the ball of the other. There is a laser attached to the ball of one and aimed at the ball of the other such that if the two spheres were not rotating, the laser would strike the second ball through a small hole in each sphere.
The spheres are separated by some distance.
The question is, if the spheres are co-rotating will the laser beam strike the second ball.
The subject line says counter rotating but should have said co rotating
Imagine two such spheres and balls/string with a common axis of rotation. The spheres are co-rotating and the balls/string are also co rotating (and rotating with the spheres) and aligned so a ball of one is directly above the ball of the other. There is a laser attached to the ball of one and aimed at the ball of the other such that if the two spheres were not rotating, the laser would strike the second ball through a small hole in each sphere.
The spheres are separated by some distance.
The question is, if the spheres are co-rotating will the laser beam strike the second ball.
The subject line says counter rotating but should have said co rotating