Relativity and Density
Name: Richard S.
If relativity predicts mass increases with velocity and
length decreases in the direction of motion, if you moved an object to a
high enough velocity would its density reached a point at which it would
collapse upon itself and become a black hole?
A person observing it fly by might think so, unless he thought the
relative motion was due to his flying in the opposite direction. In
either case, a person moving at the same velocity as the mass would see it
at rest and could find no increase in density.
Relativity has many strange effects, but the effects of relative motion
can be among the most difficult to understand. Good luck!
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Update: June 2012