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.
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.
According to Ohio University, there are three main classes of levers. These are distinguished by the relative locations of the load, effort and fulcrum along the lever. A second-class lever is one in which the load, or the item being lifted, is found between the effort and the fulcrum, or pivot poin
Some of the types of first-class levers include crowbars, scissors, seesaws, fishing rods, pliers, balance scales, trebuchets and hammers when removing nails. All of these levers have a fulcrum positioned between load and effort. First-class levers are the most common type of levers.
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.
A first-class lever, in which the fulcrum is between the load and the effort, can aid in work by changing the direction of the force and by increasing the efficiency or mechanical advantage of the force applied. The force exerted on a first-class lever has greater mechanical advantage proportional t
A door belongs to the second class of levers because its pivot (hinge) is at the end, the load (weight of the door) is at the center, while the effort (opening the door) is applied at the other end. A wheelbarrow is also a second-class lever.
Examples of second class levers include doors, staplers, wheelbarrows and can openers. In a second class lever, the load is found between the effort and the fulcrum. The direction of the effort and the load are the same.
The lever class of a hammer depends upon its use. If the hammer is used as a claw to remove a nail, it is a first class lever. When the hammer is used to strike a nail, it is a third class lever.
A lever is a simple machine, and it only consists of two material components and two work components. A lever can be made with a beam, or solid rod; a fulcrum, or pivot point; an input force, or effort; and an output force, or load or resistance.