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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

Question:
Two boxcars A and B have weights of 20,000 pounds and 30,000 pounds, 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 sub k equals 0.5. The wheels of car B are free to roll. Neglect wheel mass. The incline is a 1-in-10 grade, meaning tangent of theta equals 1 over 10, so sine of theta equals 1 over the square root of 101, and cosine of theta equals 10 over the square root of 101. Solve using single resultant normal forces on A and B.

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

This lesson applies Newton's Second Law to a two-car system rolling down an inclined track when brakes are applied to one car's wheels. Students find the common deceleration of the syst

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