Question

A locomotive is pulling 15 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 0.46 m/s2 on a level track, what is the tension in the coupling between the second and third cars? (The car nearest the locomotive is counted as the first car, and friction is negligible.)

Answer 1

Step-by-step explanation:

Behind the second car , no of cars = 13

total mass of 13 cars = 13 x 37000 Kg

acceleration = .46 m /s²

If T be the tension

This tension is pulling 13 cars

force = mass x acceleration.

T = 13 x 37000 x .46

= 221260 N .