Question
11) A 50,000kg train engine pulls 2 freight cars each of mass 20,000kg along a straight level railroad track. The train engine is accelerating at
11) A 50,000kg train engine pulls 2 freight cars each of mass 20,000kg along a straight level railroad track. The train engine is accelerating at 0.5m/s2. Assume the following:
1) the wheels on the cars are perfectly frictionless 2) Air resistance can be ignored.
a) Draw and label the free body diagram for the engine. b) Draw and label the FBD for the first car behind the engine. c) Draw and label the FBD for the second car behind the engine. d) Find the tension in the coupler between the two freight cars. e) find the tension in the coupler between the middle car and the engine f) find the force of friction on the wheels of the engine.
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