Assume you can hook every locomotive and car Union Pacific owns up into a single gigantic freight train. Safety and laws aside, would it work?
In: Physics
Depends on how you define the length of a single train, as others have pointed out. If you do not care about adding locomotives at several points in the chain, you’d be good to go. If you want all the locomotives at the front of the chain, you’re going to run into issues.
Adding locomotives at the front will, for example, increase the force that they can pull, which lets you add more cars. However, at some point the weight that is being pulled will be too much for the couplings keeping the train together, and the chain will break.
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