Re: [Phys-l] A question about the Earth's gravity

[chuck britton <cvbritton@embarqmail.com>]

The 'official' definition of g DOES include the centrifugal effect.
Physics teachers saying otherwise does not change this.

(and I believe that the 'somewhat' does indeed apply to SMALL  
effects ;-)


On May 7, 2009, at May 7(Thu) 9:58 , John Clement wrote:

> So the gravitational force is changed by the rotation of the  
> Earth?  Very
> interesting!!!
>
> John M. Clement
> Houston, TX
>
> > Its only somewhat above the level of AP-C if centrifugal effects are
> > deemed somewhat above the level AP-C
> >
> > _________________________
> >
> > Joel Rauber, Ph.D
> > Professor and Acting Head of Physics
> > Department of Physics
> > South Dakota State University
> > Brookings, SD 57007
> > Joel.Rauber@sdstate.edu
> > 605.688.5428
> >
> > > We claim that the earth's gravity at its poles is slightly  
> > > greater than
> > > that at its equator.  However, I feel justification for it is not
> > > trivial but somewhat above the level of even AP Physics C; it will
> > > require quite a bit of calculus!  Would you agree?
> > >
> > > ~ Hasan Fakhruddin
> > > Instructor of Physics
> > > The Idiana Academy for Science, Mathematics, and Humanities
> > > BallState University
> > > Muncie, IN 47306
>
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