00000
(%i20) kg*m/s^2;
(%o20)                                 N
(%i21) centigram*inch/minutes^2;
                                    127
(%o21)                        (-------------) (N)
                               1800000000000
</pre>
<p>Notice that the <em>unit</em> package recognized the non MKS combination
of mass, length, and inverse time squared as a force, and converted it
to Newtons.  This is how Maxima works in general.  If, for example, we
prefer dyne to Newtons, we simply do the following:
</p