Old 07-05-21, 12:36 PM
  #116  
TheRealDrPhil
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The physical (physics) models for bicycles make gross assumptions about mass and motion in order to offer simple explanations according to simple rules or laws. The dynamics of riding a bicycle in reality present the rider with a much more complicated experience not reflected in the simple models of motion. One example is assuming riding along a flat surface at constant velocity. A nice simplification, but in fact no road or trail surface is perfectly flat and a rider is constantly accelerating and decelerating along the path of motion. These "micro-accelerations" accumulate and sap the rider of energy and power. Anyone who has ridden a 5kg bicycle will tell you it is easier to ride than a 7kg bike. Another example is the difference in tire performance. The physics of tires is pretty simple, but the reality is far from simple. Just ask Verstappen how much 1psi difference in tire pressure can make in Baku...
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