Re: [Phys-l] PER folks and units of g

["John M Clement" <clement@hal-pc.org>]

Right on.  That is what I have been suggesting, and what is used in 
some PER inspired materials.  The fact that they are equal is of 
course the subject of general relativity.

John M. Clement
Houston, Tx

> I use a_g = 9.8 m/s^2 for the acceleration of an object in freefall 
> near
> the surface of the earth and g = 9.8 N/kg for the magnitude of the
> earth's near-surface gravitational field.
>
> > -----Original Message-----
> > From: phys-l-bounces@carnot.physics.buffalo.edu 
> > [mailto:phys-l-bounces@carnot.physics.buffalo.edu] On Behalf 
> > Of Rauber, Joel
> > Sent: Monday, September 17, 2007 9:34 AM
> > To: phys-l@carnot.physics.buffalo.edu
> > Subject: [Phys-l] PER folks and units of g
> >
> > This is mostly addressed to the PER gurus, but others should 
> > need no invitation to chime in, as their experience is 
> > appreciated and valuable.
> >  
> > There was a post a while back that suggested that the PER 
> > research was indicating that it is best to quote g as follows:
> >  
> > g = 9.8 N/kg rather than g = 9.8 m/s^2
> >  
> >  
> > the question I have is following a traditional sequence of 
> > kinematics first, while introducing free-fall what do you 
> > suggest for g?
> >  
> ...
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