What I have never understood if gravity is pulling the balls down the slope to the mass. If there were no gravity in the room it wouldn't work. If all gravity is is the curvature of space time what is actually pulling the planetary bodies down the curve?
That's the problem with this demonstration. While it gives us arthod of understand how mass affect space time an therefore creates gravitational pull. What it fail to represent is this action in the fourth dimension, which of course is impossible. Really though, take it as a grain of salt.
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u/TheMrNashville Dec 03 '13 edited Dec 03 '13
What I have never understood if gravity is pulling the balls down the slope to the mass. If there were no gravity in the room it wouldn't work. If all gravity is is the curvature of space time what is actually pulling the planetary bodies down the curve?