In: Physics
consider a cube of sides l0 traveling parallel to one side. At what speed would the density of the cube double?
Initial state (rest) :
density =
, mass =
, length =

density,
= mass/volume =
Final state :
density =
,
mass =
, length =
density,
is =
For
therefore the density will be doubled if it travels with a speed of 0.707c