Peter schrieb:
>
> On 28.01.2012 22:10, Peter wrote:
> >
> > Hi. Please, can someone help me? I solved a pair of simultaneous
> > equations that should give a value greater than zero but less than r
> > to be valid. But I get 1.15r, which is off the range but I think is
> > correct (the problem is wrong). My question, what is the correct
> > name of this case? Please excuse my ignorance.
> >
>
> The problem is in classicak mechanics, and the correct answer should
> be between zero and 1r.
>
In German, such a solution that doesn't correspond to physical reality
is often called "unphysikalisch". For translations into English see:
<
http://www.linguee.de/deutsch-englisch/uebersetzung/unphysikalisch.html>
Martin.