Unfortunately, there are no examples in the book like this and I don't have any physics books.

http://dl.getdropbox.com/u/594924/5-54.jpg

The answer in the back of the book says k = 11.2 lb/ft. But the spring is only stretched an additional .464 feet when theta is 30, so is that 5.104 pounds all going to the y component to hold up the rod? What is the method here, and how many "steps" does it take?

Thanks