I am doing a project that is similar to the coupled pendulum (http://www.her.itesm.mx/academia/profesional/cursos/fisica_2000/FisicaII/PHYSENGL/cpendula.htm [Broken] but with springs instead of pendulum. My problem is that I am required to give background theory and the address of sites I got it from, but I don't know any and all the search engines I have tried seem to have no results. My teacher has never seen anyone do this project this way before and said if worse comes to worse I must roughly use the info on coupled pendulum. But as that goes into the angle of the pendulum (which springs don't have) it doesn't help much. Can you please help as soon as possible (as it is due in soon). Thanks!