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the Trains wheels are not perfectly cylindrical but slightly conical in our opinion this conical shape is a Marvel of engineering that accomplished two major things one correcting the course of the train towards the center [Music] and two helping the train to achieve the differential action to understand the first accomplishment lets consider a simple experiment with glued paper cups when I rolled this set of glue paper cups on these tracks you can see that they are moving perfectly straight even if I try to give a small tilt for the cups at the beginning they are still managing now what about this set this is glued in opposite way whenever all the cups on the same track it is failing Railway Wheels use this kind of conical shape this angle makes sure that the wheels will never leave the track but the question is why this conical Arrangement produces a self-centering force to understand how we need to check out the forces acting on the wheels during a straight track movement the mai
