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Topic	Amtrak train derails on overpass in Washington, causing 'multiple fatalities'.
Questionmarktarius 12/19/17 1:07:51 PM #25:	adjl posted... Questionmarktarius posted... The bigger issue is that trains are held to the tracks only by gravity. Trains are really freaking heavy. "Only by gravity" is kind of downplaying just how much force gravity exerts on them. Individual cars are more relevant than the whole assembly. One of them gets some angular momentum or starts coming apart, and pretty much every car after is falling off the rail. The only viable options are to slow down, or straighten the curves. The latter probably isn't very viable. <cite>Questionmarktarius posted [p:892506443] in Amtrak tra... [t:76112198]...</cite> <quote><cite>adjl posted...</cite> <quote><cite>Questionmarktarius posted...</cite> <quote>The bigger issue is that trains are held to the tracks only by gravity.</quote> Trains are really freaking heavy. "Only by gravity" is kind of downplaying just how much force gravity exerts on them.</quote> Individual cars are more relevant than the whole assembly. One of them gets some angular momentum or starts coming apart, and pretty much every car after is falling off the rail. The only viable options are to slow down, or straighten the curves. The latter probably isn't very viable.</quote> ... Copied to Clipboard!
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