From: fortunati.luigi@gmail.com   
      
   J. J. Lodder alle ore 13:32:02 di mercoledì 20/07/2022 ha scritto:   
   > ...   
   > Perhaps the method employed by my high school teacher,   
   > long ago, can help you.   
   > At the start of dealing with the subject he declared:   
   > ---- CENTRIFUGAL FORCES DO NO EXIST ----   
      
   It is undoubtedly true that there are centrifugal forces ("apparent" or   
   "fictitious") that do not exist.   
      
   There is, for example, the force that (in the driver's eyes) accelerates the   
   lighter on the dashboard of the car when cornering.   
      
   This acceleration is truly fictitious because it disappears in the inertial   
   reference and does not stretch any elastic cord.   
      
   But the case with my animation   
   https://www.geogebra.org/m/mrthyefq   
   it is completely different because the elastic cord that stretches is there.   
      
   So how could the elastic cord stretch (in all references) if (in this specific   
   case) there is no centrifugal force?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)