Find the tension in the coupling between car and locomotive

Reference no: EM13246464

A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg and is subject to a friction force f = 250v where the speed v is in meters per second and the force f is in newtons. At the instant when the speed of the train is 33 km/h, the magnitude of the acceleration is 0.20 m/s2.

(a) What is the tension in the coupling between the first car and the locomotive?

(b) If the tension is equal to the maximum force the locomotive can exert on the train, what is the steepest grade up which the locomotive can pull the train at 33km/h?

Reference no: EM13246464

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