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[Phys-l] A ball at the center of a planet



Greetings folks!

Here is a question for your intellectual entertainment:

A solid rubber ball has a radius of r in vacuum at the surface of a planet that is a solid uniform sphere. The ball is now placed in vacuum at the center of the planet. Will the radius of the rubber ball
(a) Increase
(B) Decrease
(C) Stay the same?

Thanks

~ Hasan Fakhruddin
Instructor of Physics
The Indiana Academy for Science, Mathematics, and Humanities
Ball State University
Muncie, IN 47306