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Author Question: A supertrain (rest-length = 100 m) travels at a speed of 0.950 c as it passes through a tunnel ... (Read 25 times)

09madisonrousseau09

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on: Jul 28, 2018
A supertrain (rest-length = 100 m) travels at a speed of 0.950 c as it passes through a tunnel (rest-length 50.0 m). As seen by a trackside observer, is the train ever completely within the tunnel? If so, by how much?

Question 2

The period of a pendulum is 2.0 s in a stationary inertial frame of reference. What is its period when measured by an observer moving at a speed of 0.60 c with respect to the inertial frame of reference?


nicoleclaire22

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Reply #1 on: Jul 28, 2018
Answer to Question 1

yes, by 18.8 meters

Answer to Question 2

2.5 s


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