We consider 2n masses located at the vertices of two nested regular polyhedra
with the same number of vertices. Assuming that the masses in each polyhedron
are equal, we prove that for each ratio of the masses of the inner and the outer
polyhedron there exists a unique ratio of the length of the edges of the inner and
the outer ...»»»»
We consider 2n masses located at the vertices of two nested regular polyhedra
with the same number of vertices. Assuming that the masses in each polyhedron
are equal, we prove that for each ratio of the masses of the inner and the outer
polyhedron there exists a unique ratio of the length of the edges of the inner and
the outer polyhedron such that the configuration is central.^^^^