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Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT?

Message-ID <588E9F1C.527A@ix.netcom.com> (permalink)
Date 2017-01-29 18:04 -0800
From The Starmaker <starmaker@ix.netcom.com>
Newsgroups sci.physics.relativity
Subject Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT?
References (3 earlier) <ef528kFqm0eU2@mid.individual.net> <588DABB2.7B39@ix.netcom.com> <588E47FF.F26@ix.netcom.com> <588E55C3.2B28@ix.netcom.com> <588E6E82.2D31@ix.netcom.com>

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The Starmaker wrote:
> 
> The Starmaker wrote:
> >
> > The Starmaker wrote:
> > >
> > > The Starmaker wrote:
> > > >
> > > > Sylvia Else wrote:
> > > > >
> > > > > On 29/01/2017 1:21 PM, The Starmaker wrote:
> > > > > > Sylvia Else wrote:
> > > > > >>
> > > > > >> On 28/01/2017 6:58 AM, HGW, DSc. wrote:
> > > > > >>> To a person on the ground, an object falling to Earth is accelerating,
> > > > > >>> as in dv/dt (ignore air). It also appears to be accelerating relative to
> > > > > >>> Earth when viewed from the moon. ...yet it has been claimed here that
> > > > > >>> the state of free fall is inertial.
> > > > > >>> Note, all massive objects in the universe are freely 'falling' so can
> > > > > >>> their 'reference frames' be regarded as inertial?
> > > > > >>
> > > > > >> A person on the ground is not inertial, so the requirement that the laws
> > > > > >> of physics by the same for all inertial observers does not apply to the
> > > > > >> person on the ground. An inertial body accelerates in the frame of a
> > > > > >> non-inertial observer.
> > > > > >>
> > > > > >> As for massive bodies being inertial, the problem is that, in common
> > > > > >> with all observers, the volume of space regarded as being inertial for
> > > > > >> the observer is that volume where the gravitational field doesn't vary
> > > > > >> significantly in either intensity or direction. A massive body itself
> > > > > >> creates a field that varies in intensity and direction, so the volume of
> > > > > >> space regarded as inertial is much smaller than the body.
> > > > > >>
> > > > > >> Sylvia.
> > > > > >
> > > > > >
> > > > > >
> > > > > > the person on the ground is falling..
> > > > > >
> > > > > >
> > > > > > people fall in holes...
> > > > >
> > > > > While person is falling into a hole, and not touching anything, they're
> > > > > inertial (ignoring air resistance). Before they started to fall, they
> > > > > were not inertial. When they reach the bottom of the hole, they're again
> > > > > not inertial.
> > > > >
> > > > > Sylvia.
> > > >
> > > > (i was thinking of a bottom less hole)
> > > >
> > > > i'm a little confused, the earth is faling with the person at the same
> > > > time...
> > > > if they are both falling at the sametime...where is the resistance?
> > >
> > > birds don't fly, they fall...but they create a resistance with their
> > > wings.
> > >
> > > i'm not creating any resistance.
> >
> > a baby doesn't learn how to walk...it learns how not to fall, this way
> > or that way.
> 
> but if you understand the nature of things, you pick up a stone...let it
> go, it falls down.
> 
> it doesn't fall up.
> 
> or this way or that way...just down.




let me get this straight..

if i drop two stones
they both fall down
at the same time..

what difference does it
make if one stone is

walking on the other stone?

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Thread

Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-28 06:58 +1100
  Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Juliana Auerbach <jaot@tognaenn.org> - 2017-01-27 20:15 +0000
  Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Odd Bodkin <bodkinodd@gmail.com> - 2017-01-27 14:20 -0600
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Juliana Auerbach <jaot@tognaenn.org> - 2017-01-27 20:30 +0000
      Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-02-02 02:17 +0100
        Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Irvin Starrett <etrrarn@arneir.etr> - 2017-02-02 05:03 +0000
          Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-02-02 12:37 +0100
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-28 00:48 +0000
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-29 09:44 +1100
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Y <yanarchi@hotmail.com> - 2017-02-01 15:03 -0800
  Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-27 14:33 -0600
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-29 10:04 +1100
      Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "Paul B. Andersen" <relativity@paulba.no> - 2017-01-29 10:31 +0100
        Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-30 06:46 +1100
          Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "Paul B. Andersen" <relativity@paulba.no> - 2017-01-29 21:55 +0100
            Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-30 20:40 +1100
              Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "Paul B. Andersen" <relativity@paulba.no> - 2017-01-30 21:20 +0100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-31 20:05 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Juanita Forney <iatiet@oetnnrn.org> - 2017-01-31 10:54 +0000
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-01 09:40 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-31 10:20 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-01 09:27 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-31 15:45 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-01 11:04 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-01 11:12 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-01 16:47 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-31 19:42 -0600
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-02 06:58 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-01 14:42 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-02 10:53 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? mlwozniak@wp.pl - 2017-02-01 14:00 -0800
          Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? benj <benj@nobody.net> - 2017-01-30 17:50 -0500
            Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? xxein1@att.net - 2017-01-30 17:39 -0800
            Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-31 20:08 +1100
      Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-30 09:06 -0600
        Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-31 20:12 +1100
  Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-01-28 12:04 +1100
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? mlwozniak@wp.pl - 2017-01-28 03:03 -0800
      Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-01-29 13:26 +1100
        Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? mlwozniak@wp.pl - 2017-01-29 11:40 -0800
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-28 18:21 -0800
      Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-01-29 13:27 +1100
        Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-29 00:45 -0800
          Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-29 11:52 -0800
            Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-29 12:51 -0800
              Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-29 14:36 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-29 18:04 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-30 23:42 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-01-31 20:10 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-01-31 10:17 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-01 09:43 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-02-02 22:44 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-02 09:37 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-03 08:24 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-03 16:59 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-02-04 12:08 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? benj <benj@nobody.net> - 2017-02-03 20:18 -0500
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-03 21:39 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? The Starmaker <starmaker@ix.netcom.com> - 2017-02-04 12:37 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? alsor@interia.pl - 2017-02-04 14:32 -0800
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? benj <benj@nobody.net> - 2017-02-03 20:23 -0500
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-02-04 12:06 +1100
        Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-29 19:50 +1100
          Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Sylvia Else <sylvia@not.at.this.address> - 2017-01-29 19:59 +1100
            Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-30 06:50 +1100
              Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-30 09:25 -0600
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-01-31 20:19 +1100
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Juanita Forney <iatiet@oetnnrn.org> - 2017-01-31 10:59 +0000
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-31 10:49 -0600
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-31 10:44 -0600
                Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-01 10:10 +1100
  Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-01-30 19:03 -0800
  Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? alsor@interia.pl - 2017-01-31 10:43 -0800
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-01 10:12 +1100
      Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? alsor@interia.pl - 2017-02-01 11:46 -0800
  Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? JanPB <filmart@gmail.com> - 2017-01-31 15:20 -0800
    Re: Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "HGW, DSc." <HG@....> - 2017-02-02 07:00 +1100
  Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-01 12:13 -0800
    Let's Get This Straight. Is Free Falling 'Inertial' or Is it NOT? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-01 12:18 -0800

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