How do trains pull so much weight? I’ve seem them with hundreds of freight and gas tanker cars.
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Powerful engines (over 4000hp) and the fact that it takes way less energy to make something on wheels roll than it does to lift. Just think, if your car breaks down, it’s not that hard to just roll it off to the side of the road, especially once you get it going. Now picking the car up and carrying it off the road on your shoulder would be impossible because it would require so much more power. Train engines just do the same thing on a much bigger scale.
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