Of course trains can go around a corner! we will find out how in a bit. Previously I posted a video about car differentials. Why do we need a car differential? to allow the car to go around a corner i.e. during a turn let the outer wheel rotate more than the inside wheel.
BUT how about trains? how do they go around a corner? The answer is NOT a differential, ever look closely at a train axle? Its a solid shaft going through the two wheels. There is no differential in between like your car. The simple yet not so intuitive secret is the slightly coned shaped wheels.Watch the Richard Feynman interview and you will know why coned shaped wheels work.
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