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A 5.00×105 -kg subway train is brought to a stop from a
Chapter 7, Problem 22(choose chapter or problem)
QUESTION:
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?
Questions & Answers
QUESTION:
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?
ANSWER:
Solution
Step 1
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