A rod of length L0 moves with a speed v along the hor- izontal direction. The rod makes an angle of 0 with Copyright 2005 Thomson Learning, Inc. All Rights Reserved. respect to the x-axis. (a) Show that the length of the rod as measured by a stationary observer is given by L L0[1 (v 2/c 2 )cos2 0] 1/2. (b) Show that the angle that the rod makes with the x-axis is given by the expression tan tan 0. These results show that the rod is both contracted and rotated.