ocr: PRINCIPLES OF SCIENCE LEVERS LEVER IS A MACHINE consisting ofa bar Au that tilts on a fixed point calleda frulcrum. Most levers are used to magnify, force, or effort, lettingyou move a beavy load easily. Levers can also be used to amplify movement, such as in a fishing rod where you move the. handle a little and the LOAD end ofthe rod moves through a wide arc. LEVER EFFORT. FULCRUM L 2 a ) - LT Classes ofLever Special Levers Related Machines