Inveja dos anéis de Saturno - I

Synopsis: A fisherman tells his friend that experienced an unusual situation, and they eventually ending in a stalemate: If all the planets had a string outlining its equator, and wanted to increase it so that it was orbiting at a certain fixed distance from the crust, larger planets that would add greater amount of rope that smaller planets? (Part 1/2)
Source: Unicamp - M3, Mathematics Multimedia.
URL: http://m3.ime.unicamp.br/recursos/1301