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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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