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Problem 13-2: Engineering Mechanics- Dynamics (Hibbeler 14th Edition)

Engineering Mechanics Dynamics · R.C. Hibbeler · Chapter 13

Course: Engineering Mechanics Dynamics Book: R.C. Hibbeler Chapter: Chapter 13

Question

Two boxcars A and B have weights of 20,000 lb and 30,000 lb, respectively. They are freely coasting down an incline when brakes are applied to all 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 $\mu_k = 0.5$. The wheels of car B are free to roll. Neglect wheel mass. The incline is a 1-in-10 grade (i.e., $\tan\theta = 1/10$, so $\sin\theta = 1/\sqrt{101}$, $\cos\theta = 10/\sqrt{101}$). Solve using single resu…

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