Re: [Phys-l] internal/external conservative/nonconservative forces !?!?

[Bernard Cleyet <bernardcleyet@redshift.com>]

John!

You didn't mention it's hosted by comPADRE, which is sponsored by the AAPT.

I'm rather certain (too lazy to verify) at least one member of this list is affiliated w/ the AAPT**.  I request that that person(s) investigate.

** Other than just a member.

bc, life member.


On 2010, Dec 06, , at 14:22, John Denker wrote:

> While I was trying to figure out why bogus derivations of
> Bernoulli's principle outnumber correct derivations by a
> factor of 100-to-1 or so, I stumbled across this:
>
>  http://www.physicsclassroom.com/class/energy/u5l2a.cfm
>
> It classifies F_grav and F_spring as internal forces and 
> classifies a long list of other forces as external forces.


and further disturbing ....