fromWIRED
1 day agoHow Can a Locomotive Pull a Long Train That's Much Heavier?
Have you ever watched a mile-long freight train rumble by and wondered how one locomotive can pull more than a hundred fully loaded cars? The locomotive weighs maybe 150 metric tons, and each car is about 100 metric tons, which means it's hauling 10,000 tons. I mean, if you weigh 170 pounds, this would be like pulling three SUVs totaling 12,000 pounds.
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