A first-class lever is a beam, rod or stick with the load at one end, the fulcrum in the middle and the force applied on the other end. A good example of a first-class lever is a child's see-saw.
Third-class levers have an input force, a fulcrum and an output force. The placement of the fulcrum, input and output forces of the lever determines its type.
Examples of first-class levers include a balance scale, a seesaw and a crowbar. A first-class lever places the fulcrum in the middle of the effort and the load.
The first class lever uses the fulcrum in between the applied force and load, the second class lever uses the load between the fulcrum and applied force and the third class lever uses the applied force between the fulcru...
The fixed point on which a lever moves is called the fulcrum. A lever is a simple machine with three parts: effort, load and the fulcrum. The lever would be useless without the fulcrum, as it is the point on which the le...
A class 2 lever is a lever with the fulcrum or joint at one end, with the load that is being carried in the middle. The effort, which is the object lifting or pulling the lever, is at the opposite end from the fulcrum.
A baseball bat is a third-class lever, with the fulcrum at the end, the force located in the center and the load the point where the ball strikes. Third-class levers require more work to accomplish the job but give the m...