You See a System Consisting of a Mass Oscillating on the End

question 13

Multiple Choice

You see a system consisting of a mass oscillating on the end of a spring passed you at a speed u and note that the period of the system is T.Your strange friend,who is moving with the mass-spring system,also measures its period and finds a period that is

• A)equal to T.
• B)less than T.
• C)greater than T.
• D)either a or b depending on whether the system was approaching or receding from the first observer.
• E)There is not sufficient information to answer the question.

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