From: fortunati.luigi@gmail.com   
      
   Luigi Fortunati il 21/03/2024 17:13:41 ha scritto:   
   > What makes gravitational forces different from non-gravitational forces?   
   >   
   > Luigi Fortunati   
   >   
   > [[Mod. note -- That's a very good question!   
   >   
   > That is, the gravitationalforce on a body with inertial mass 2 kg is (a)   
   precisely twice that on a body with inertial mass 1 kg, and (b) the *same*   
   independent of the composition of the body.   
   > -- jt]]   
      
   It is certainly true the (b) which makes gravitational forces different   
   from non-gravitational ones.   
      
   But (if I'm not mistaken) (a) also applies to the electromagnetic force   
   which, on a 2 gram body of any material X, is exactly double that on a 1   
   gram body of material X.   
      
   Is that so?   
      
   Luigi Fortunati   
      
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