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A locomotive is pulling 9 freight cars, each of which is loaded with the same weight. The mass of each loaded car is 37,000 kg, and we can neglect friction on these 9 cars. If the train is accelerating forward at 0.81 m/s^2 on a level track, what is the tension in the coupling between the second and third cars?

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onyebuchinnaji

The tension in the coupling between the second and third cars is 269,730 N.

Tension in the coupling between the cars

Since the weight of each car is the same, the applied force on each will be the same and the tension on the coupling between the cars will be the same.

T = F = ma

T = 9(37,000 x 0.81)

T = 269,730 N

Thus, the tension in the coupling between the second and third cars is 269,730 N.

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