My problem (trying to help an ay last keen son)-a lever 5m long, a weight of 300kg, a force of 100kg. The question says describe? I am trying to work out the distance from the end of lever to fulcrum or in other words where the fulcrum should lie. tried formula which has gone to course with son but it gives L over little l = force over effort? Can you assist please? I feel there must be some better formula.