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   sci.physics.research      Current physics research. (Moderated)      17,516 messages   

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   Message 17,356 of 17,516   
   Tom Roberts to Luigi Fortunati   
   Re: Free fall   
   31 Jan 24 07:59:59   
   
   From: tjoberts137@sbcglobal.net   
      
   On 1/30/24 2:27 AM, Luigi Fortunati wrote:   
   > Tom Roberts il 27/01/2024 09:23:06 ha scritto:   
   >>> No one can deny that, in the most remote space far from all   
   >>> gravity, a metal elevator falling towards an electromagnet is in   
   >>> "free fall".   
   >> Not true: every physicist would deny that, because the   
   >> electromagnet exerts an electromagnetic force on the elevator,   
   >> making it NOT be in freefall.   
   >   
   > Gravity also exerts a force on the elevator.   
      
   Not in GR, which is now the generally-accepted theory of gravitation.   
      
   But to forestall your (baseless) objection, the standard definition of   
   freefall says no NON-GRAVITATIONAL forces are acting on the object.   
      
   I repeat: posting zillions of questions here is not helping you learn   
   very basic physics. Get a good textbook and STUDY, or better, enroll in   
   a physics course at a college or university.   
      
   Tom Roberts   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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