System S\' has a velocity u = +0.5 c relative to system S, as shown. The clocks

Question

System S' has a velocity u = +0.5 c relative to system S, as shown. The clocks of S and S' are synchronized at t = t' = 0 s when the origins 0 and 0' coincide. An event is observed in both systems. The event takes place at x = 400 m and at time t = 8.4 ?s, as measured by an observer in S. In the figure, a rod which is stationary in S has a proper length of 143 m. The length of the rod measured by an observer in S' is closest to: A 77 m B 120 m C 87 m D 170 m E 110 m

System S' has a velocity u = +0.5 c relative to system S, as shown. The clocks of S and S' are synchronized at t = t' = 0 s when the origins 0 and 0' coincide. An event is observed in both systems. The event takes place at x = 400 m and at time t = 8.4 ?s, as measured by an observer in S. In the figure, a rod which is stationary in S has a proper length of 143 m. The length of the rod measured by an observer in S' is closest to: A 77 m B 120 m C 87 m D 170 m E 110 m

Explanation / Answer

B 120

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