how does a Wheel of a train Works?
Answers
ratate on train track that means rotatotary motion
Then there is how do wheels that have no ability to steer go around a curve. All train wheels have a profile in their portion that comes into contact with the track. The track has a corresponding profile in the shape of that portion that comes in contact with the wheel. As a train goes around a curve physics dictates that it move to the outside of the curve and the track. As this movement takes place it moves up onto the profil of track and wheel that allows. The wheels on a steam engine have large weights built into them and the wheels are clocked or oriented so that at a stop at least one weight is positioned in such a position that when the brakes are released the weight will cause the wheel to rotate . This was done because of the way the power was delivered to the wheel. Though extremely powerful it could not cause the wheel to rotate from a dead stop but only if the wheel first started the roll. The weight caused this initial roll to begin.
the outside wheel to turn, though on a solid axle, at a rate that allows it to cover a greater distance than the inside wheel, which has shifted toward the outside of the curve but using the inside wheel portion of the track/wheel profile that allows the inside wheel to cover a shorter distance. Once back into a straight line they all ride on the flat portion of the wheel/track profile. The profiles tend to center everything when traveling in a straight line. The jostling you notice of trains as they travel is this principle keeping things centered.
Hope this helps you