# Lever calculations

by Alan Butcher
Tags: calculations, lever
 Mentor P: 41,471 Look at the torques involved in a lever. To be in balance about the fulcrum, the torques must be equal. In other words: $$F_1 D_1 = F_2 D_2$$ where the Fs are the two forces applied to the lever and the Ds are the distances from the fulcrum. You are given the forces. Hint: What must those two distances add to?