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My Notes A 5000-kg freight car rolls along rails with negligible friction. The car is brought to...

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Physics

My Notes

A 5000-kg freight car rolls along rails with negligiblefriction. The car is brought to rest by a combination of two coiledsprings as illustrated in the figure below. Both springs aredescribed by Hooke's law and have spring constants with

k1 = 1700 N/m

and

k2 = 3200 N/m.

After the first spring compresses a distance of 33.0 cm, thesecond spring acts with the first to increase the force asadditional compression occurs as shown in the graph. The car comesto rest 49.5 cm after first contacting the two-spring system. Findthe car's initial speed.

Answer & Explanation Solved by verified expert
3.8 Ratings (354 Votes)
GivenSpring constant of first spring Given that the car comes to rest 495 cm after first    See Answer
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