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# The two boxcars A and B have a weight of 20 000 lb and 30

ISBN: 9780133951929 123

## Solution for problem 13-2 Chapter 13

Engineering Mechanics: Statics & Dynamics | 14th Edition

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Problem 13-2

The two boxcars A and B have a weight of 20 000 lb and 30 000 lb, respectively. If they are freely coasting down the incline when the brakes are applied to all the wheels of car A, determine the force in the coupling C between the two cars. The coefficient of kinetic friction between the wheels of A and the tracks is mk = 0.5. The wheels of car B are free to roll. Neglect their mass in the calculation. Suggestion: Solve the problem by representing single resultant normal forces acting on A and B, respectively

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Day 12 ­A while loop will only execute when the conditions are met ­Golden rule for while loops: your variable has to change within the loop ­First line is while(condition); last line is end ­If you are stuck in a loop, do Ctrl + C Write a code for how long it will take to pay back the...

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