From: fortunati.luigi@gmail.com   
      
   Richard Livingston marted=EC 19/04/2022 alle ore 15:28:38 ha scritto:   
   > With respect to this inertial frame it is the earth that is=20   
   > accelerating upward.=20   
      
   This is incomprehensible.   
      
   Acceleration occurs in the presence of a force (F=3Dma).   
      
   The force existing between the 300 kg lift and the Earth is worth 300=20   
   kg-weight.   
      
   This force justifies the downward acceleration of the elevator but=20   
   could never justify the acceleration of the entire earth mass upward!   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)