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## Re: Ballistic Theory and the Sagnac Experiment

 Subject: Re: Ballistic Theory and the Sagnac Experiment Henri Wilson Mon, 27 Mar 2006 23:23:18 GMT sci.astro, sci.physics.relativity, sci.physics
 ```On Mon, 27 Mar 2006 23:28:08 +0200, "Paul B. Andersen" <[email protected]/* */> wrote: >Henri Wilson wrote: >> On Wed, 22 Mar 2006 16:42:29 +0100, "Paul B. Andersen" >> <[email protected]/* */> wrote: >> >>>There is but one definition of the centrifugal and Coriolis >>>pseudo forces in _mechanics_. You can look it up in any text book. >>>Or you can read my posting. >>>But OK, let me repeat it. >>> >>>In a frame rotating with the angular velocity w (a vector) >>>we have the following pseudo forces acting on a body with mass m >>>which is moving with the velocity u (a vector) in the rotating frame: >>> >>>The centrifugal force: >>> F = m* (w X (w X r)) where r is the radius vector. >>> The magnitude of this force will be m*w^2*|r|, and >>> its direction will always be radially outwards. >>> Expressed with the speed v = |w|*|r| : F = m*v^2/|r| >> >> >> Paul, that is centripetal force. (you omitted the minus sign somewhere) >> >> In the rotating frame, w = 0. > >I am obviously talking to an idiot. w is the rotation of the R frame in the nonR frame as measured in the NonR frame. The R frame has no rotation in itself. >> You obviously don't understand the basics. > >You reveal an astonishing ignorance of elementary >Newtonian mechanics, and say that I don't understand the basics. >How pathetic. > >This is obviously futile, you will never learn the basics anyway. I am trying to teach YOU the basics but you are too thick.... >>> Note that the centrifugal force does NOT depend on >>> the velocity u in the rotating frame. >> >> >> The imaginary Centrifugal force has the same value as the centripetal force >> in >> the non-rotating frame. It's an 'instantaneous' thing. >> >> >>>The Coriolis force: >>> F = 2*m*(w X u) >>> >>> Note that the direction of this force always is >>> in the plane of rotation, and is perpendicular to >>> the velocity u. When u is tangential as in our case, >>> the direction will be radial. >> >> >> But in the case of a rotating sphere, such as Earth, it is NOT always in that >> plane. >> You calculation applies to the force due to change in angular momentum in the >> NonR frame. >> Coriolis is the imaginary equivalent in the R frame (where w is again zero). >> >> >>>This NG is a sci group. >>>When you discuss in this group, you better use the normal >>>accepted definitions of centrifugal and Coriolis, >>>don't invent your own. >> >> >> Paul, in the R frame, w = 0. Do you disagree with that. > >You are an idiot! >"In a frame rotating with the angular velocity w (a vector).." ....w as measured in the NonR frame, the angular velocity is zero (in ITSELF, the R frame). > >Enough! Yes you will never learn Coriolis and centrifugal forces are both imaginary and exist only in rotating frames. > >Paul HW. www.users.bigpond.com/hewn/index.htm ```
 Current Thread Re: Ballistic Theory and the Sagnac Experiment, (continued) Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson Re: Ballistic Theory and the Sagnac Experiment, George Dishman Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson Re: Ballistic Theory and the Sagnac Experiment, Jerry Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson Re: Ballistic Theory and the Sagnac Experiment, Jerry Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson Re: Ballistic Theory and the Sagnac Experiment, Paul B. Andersen Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson Re: Ballistic Theory and the Sagnac Experiment, Paul B. Andersen Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson <= Re: Ballistic Theory and the Sagnac Experiment, Paul B. Andersen Re: Ballistic Theory and the Sagnac Experiment, Henri Wilson