Gabriel Genellina wrote: > En Wed, 05 Sep 2007 06:45:29 -0300, Grzegorz Słodkowicz <[EMAIL PROTECTED]> > escribi�: > > >> I believe vectors can only be added if they have the same point of >> application. The result is then applied to the same point. >> > > You are talking about "forces", not "vectors" in general. Using the "point > of application" is just a convenient way of condensing two things: the > resultant force -a vector- and the resultant momentum -a pseudovector- > into a single entity, and only makes sense for a rigid body. From the Wikipedia (http://en.wikipedia.org/wiki/Vector_%28spatial%29): "Two vectors sharing the same initial point can also be added or subtracted."
Regards, Greg -- http://mail.python.org/mailman/listinfo/python-list
