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# A 5.00×105 -kg subway train is brought to a stop from a

## Problem 22PE Chapter 7

College Physics by Urone | 1st Edition

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College Physics by Urone | 1st Edition

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Problem 22PE

A 5.00×105 -kg subway train is brought to a stop from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. What is the force constant k of the spring?

Step-by-Step Solution:

Step 1</p>

When the train collides with the spring its speed decreases its energy transformed into spring the potential energy. Hence the given mass of subway train m=5, speed of the train (V) =0.50m/s and the spring compressed (x)=0.4m

Step 2 of 2

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