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posted by  CEStudent on 11/2/2009 11:28:22 PM  |  status: Live  |  Earned Karma: 25

Dynamics

Course Textbook Chapter Problem Needs by
Engineering Mechanics N/A N/A N/A 11/3/2009 at 10:00:00 PM
Question Details:
A subway train is traveling at a speed of 45 miles/hour when the brakes are fully applied on the wheels of cars A and B, causing them to slide on the track, but are not applied on the wheels of car C. Knowing that the coefficient of kinetic friction is .30 between the wheels and the track, determine (a)the distance required to bring the train to a stop, (b)the time required to bring the train to a stop and (c) the force in each coupling.    ** Car A=30 tons     Car B=40 tons        Car C=30 tons
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