I have asked and I have asked, an no one has yet answered. I'm pleased to have discovered this free meeting place where I can ask so many educated people: how does a lever work? What's going on with the forces involved? I have read the typical formulas that are good at predicting the behavior of a lever. But very smart people have been unable to explain to me how a lever works. I look forward to your answers. Thank you! This has been bugging me for years.