Thanks for the reply Andrew, the question is a bit long winded but the main problem is I can't get an equation for rddot^2 which allows me to find the constants b and c? I have tried from an energy point of view as well, where I get in the end a cubic equation for the stable points where rdot =...
If anyone could help me with this problem I would be very grateful, its been annoying me for a day or two now! Its one of those exam questions that lead you through a derivation, giving you blanks to fill in. Although these are designed to make the derivation easier, sometimes it makes a...