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 lever pivots.Continue Reading
A lever consists of a metallic rod, a plank of wood or a wooden pole resting on a support. At one end of the lever, a load in the form of an object is used while at the other end, effort or force is applied to shift or move the object. A lever allows heavy objects to be shifted or lifted by applying minimal force. There are three classes of levers based on the position of the load and effort with respect to the fulcrum.
Some examples of the use of the lever are a pair of pliers, tongs and scissors.Learn more about Motion & Mechanics