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Well of Death: Physics behind it
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[QUOTE="Lnewqban, post: 6830560, member: 673625"] Yes, that would be correct to say. The line of action of the vector summation of the Normal reaction from the surface of the wall and the friction vectors must extend through the combined center of mass of rider and bike. Please, note that such balance is instable, as the CM is located "above" the point or area of support (tire-vertical wall). [B]The alternating steering input[/B] of the rider trying to keep the above condition real, is the only way for any single-track two-wheeled machine to keep balance (just like it happens when rolling on a perfectly horizontal surface). Please, read: [URL]https://en.wikipedia.org/wiki/Bicycle_and_motorcycle_dynamics#Balance[/URL] Because of that, the bike can't be moving on a horizontal plane, its trajectory oscillates up and down, at least a little. Can you see that oscillation in the videos that you have watched? [ATTACH type="full" width="290px" alt="figure_6.36.png"]318627[/ATTACH] [/QUOTE]
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Well of Death: Physics behind it
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