what is the different
i am not obliged to help you
i am not obligated to help you
Try here: obligated, obliged, obligate, oblige. The Columbia Guide to Standard American English. 1993
To me, "I'm not obliged" means I'm not willing to accommodate your needs, whereas "I'm not obligated" means I'm not morally or socially bound to help you.
Last edited by Casiopea; 25-Feb-2007 at 14:10.