From: bergervo@iae.nl   
      
   On 1/15/2019 9:48 AM, poraty6@gmail.com wrote:   
   > On Monday, January 14, 2019 at 10:26:30 AM UTC+2, Tom Roberts wrote:   
   >> On 1/13/19 4:23 PM, Luigi Fortunati wrote:   
   >>> Circular motion without centripetal force is impossible. And then we   
      ...   
     ..   
   >> Note this centripetal force is every bit as fictitious as the   
   >> "centrifugal force" -- both are artifacts of using non-inertial coordinates.   
   > ============================   
   > artifacts ??!!   
   >   
   > imagine a child standing in a  buss   
   > not holding anything to stabilize himself   
      
   OK, no forces acting so that will work!   
      
   > now   
   > the buss is making a very sharp turning movement   
      
   That's noted..   
      
   > and the child is falling  away towards the   
   > outside direction of that circular movement   
      
   But you clearly stated just one sentence ago that *the bus   
   is making* a very sharp turn! So the bus (its chairs and   
   its walls) are turning against the child. The child is not   
   falling against those objects.   
      
   > **AND IS GETTING HURT** (getting injuries!! )   
   > ...   
      
   Because the bus made this sharp turn and its walls suddenly   
   moved towards the child, you mean? OK, we now established   
   that. All very clear now, I think..   
      
   --   
   Jos   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)