A mass is bouncing on the end of a spring with a period T when measured by a ground observer.What would the period of oscillation be (as measured by the same observer)if the mass and spring were moving past the ground observer at a speed of 0.9c?
A)5.3 T
B)0.40 T
C)3.2 T
D)2.3 T
E)1.1 T

Question

A mass is bouncing on the end of a spring with a period T when measured by a ground observer.What would the period of oscillation be (as measured by the same observer)if the mass and spring were moving past the ground observer at a speed of 0.9c?
A)5.3 T
B)0.40 T
C)3.2 T
D)2.3 T
E)​1.1 T

Quizplus · Accepted Answer

The Answer is D

A Mass Is Bouncing on the End of a Spring