In trying to solve a problem, I was using the simple F1D1 = F2D2 as the balance point of a lever. My limited physics knowledge knew no better. My hypothetical involved using the "short side" of a lever to lift a weight on the long side of a lever. After thinking about it... I realized I couldn't have a big cast iron lever and expect to balance it by placing 4 quarters on one end. I realized that the weight of the lever has to be factored in. Since so many web pages talk about levers but never talk about this aspect, I am here hoping someone can tell me (or link me to) the COMPLETE formula of a lever. Thank you for any help. PS. I apologize if this is a redundant question, or if this is the wrong forum for this question. This place is so big that it's hard to find things.