Recent content by ImmaGrump

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    What is the Force Constant k of a Spring?

    Well I know PE = (.5)kx^2, but I am afraid I don't know how to plug in the numbers.
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    What is the Force Constant k of a Spring?

    Homework Statement A 4.50 ✕ 10^5 kg subway train is brought to a stop from a speed of 0.500 m/s in 0.900 m by a large spring bumper at the end of its track. What is the force constant k of the spring? M- 4.50E5 kg IV- .5m/s FV- 0m/s Homework Equations k=mg/x F=-kx PE = (.5)kx^2The Attempt at...