Observer a Sees a Pendulum Oscillating Back and Forth in a Relativistic

question 85

Multiple Choice

Observer A sees a pendulum oscillating back and forth in a relativistic rocket and measures its period to be TA. Observer B moves along with the rocket and measures the period of the
Pendulum to be TB. What is true about these two time measurements?

• A) \(T _ { A } = T _ { B }\)
• B) \(T _ { A } > T _ { B }\)
• C) \(T \mathrm {~A} < \mathrm { T } _ { \mathrm { B } }\)
• D) \(T\) A could be greater or smaller than \(T _ { B }\) depending on the direction of the motion.

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