Re: Internal or external?

[paul o johnson <pojhome@FLASH.NET>]

Joel Rauber wrote:
> This would provide an excellent segue to the weight/weightless
> discussion,
> i.e. is weight what is measured on the scale or is it Mg?  I.e.
> is weight
> synonomous with the "force of gravity" the force exerted by the earth
> on the
> rock in the above example?
I spend more time than I have explaining to my students that weight is
not mass times g but is the force squeezing the bathroom scale between
your feet and the floor. That's why you are weightless in free fall.

poj
collin county college