Re: arons and dry ice

[John Barrer <forcejb@YAHOO.COM>]

I do this every year with a small chunk of dry ice
(obtainable at many supermarkets) on a level lab table
works great and is a terrific way to break (or at
least nibble away at) the notion that motion and force
are linked. John Barrere
--- Justin Parke <FIZIX29@AOL.COM> wrote:
> I read in arons (sorry don't have the specific
> reference) earlier today the
> section on introducing Newton's laws and
> specifically the concept of inertia
> and the effects of forces on a body's motion.  He
> recommends a 50 lb piece of
> dry ice on a sheet of glass.  (!)
>
> Has anyone done this?  How big is the sheet of
> glass?  How big is 50 lbs of
> dry ice?  I am not sure where I will obtain these
> things but the idea is a
> great one...much better than 1 dimensional pasco
> carts or even an air table
> (since the pucks have such low mass).  Are there
> similar but easier things
> folks have tried?
>
> thanks for the help
>
> Justin
>
> This posting is the position of the writer, not that
> of SUNY-BSC, NAU or the AAPT.


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This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.