Its measured length in frames will be 1.32m if a rod is parallel to reference frame s's x axis and travelling along it at a Axis Speed of 0.630c. Its length at rest is 1.70 m.
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The relationship between the rod's length L, measured in a frame in which it is moving at a speed v parallel to its length, and its rest length Lo is expressed as Lo/gama, where gama is equal to 1/(1-Beta2^2)^1/2.
Lo=1.70m and β=0.630, so
[tex]L = Lo\sqrt{1-\beta ^2} = 1.70m\sqrt{1-(0.630)^2} = 1.32m[/tex]
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