Quote:
Originally Posted by EricH
You also shouldn't see a frictional force increase as a robot's wheels get wider, but you do.
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Which is why the standard highschool model of friction is incredibly misleading. It's applicable in almost no real world situation. The only time that model really works is with two extremely hard, extremely smooth surfaces, which you rarely encounter. Soft, rough surfaces (e.g. a car tire) are much more common and behave entirely differently than that model predicts.