A lever is a simple machine that helps lift or move heavy objects with less effort. It consists of a long bar that pivots on a point called the fulcrum. By placing the fulcrum closer to the load, you can lift heavier items more easily. This principle is used in everyday tools like crowbars and seesaws. There are three types of levers: first-class, second-class, and third-class. In a first-class lever, the fulcrum is in the middle, like a seesaw. In a second-class lever, the load is in the middle, like a wheelbarrow. In a third-class lever, the effort is in the middle, like a tweezers. Each