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3 October, 07:35

7. A locomotive is pulling 19 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg. If the train is accelerating at 0.22m/s2 on a level track, what is the tension in the coupling between the second and third cars

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  1. 3 October, 08:18
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    N 138380

    Explanation:

    Force = ma where m is the mass in kg and a is acceleration

    the locomotive is pulling 19 freight cars mass of each car is 37 000 kg

    the train accelerating at 0.22 m/s²

    the tension in the coupling between the second and third cars = the tension between the second and third cars pulling the third car to the 19 th car = 17 * 37000 kg * 0.22 m/s² = N 138380
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