UNIQUENESS OF THE LEVER
Levers can be unique in many ways. They are very unique because their are 3 classes of levers. They are the first class, second class, and third class. A see-saw or traditional scale is a first-class lever: thefulcrum is located in between the effort and the load. A wheelbarrow is a second-class lever because the fulcrum is located at one end,with the effort at the other end and the load somewhere in between. Tweezers are third-class
levers. They have the fulcrum at one end, much like a second-class lever, but the load and the effort are in reversed positions. There are three different kinds of levers. They are the first class,second class,and third class levers. The only difference between the three is the location of the fulcrum, or piveting point. A first class lever is like
your everyday crowbar. The fulcrum is in the middle with the resistance force, the load, on one end and the effort force on the other.An example of a second class lever is a wheelbarrow. On a second class lever the fulcrum is on the end,
the resistance force, the load, is in the middle,and the effort is at the other end.A baseball bat is an example of a third class lever.The fulcrum is on the end of one side, the effort force is in the middle, and the resistance force,the load, is at the the top.
levers. They have the fulcrum at one end, much like a second-class lever, but the load and the effort are in reversed positions. There are three different kinds of levers. They are the first class,second class,and third class levers. The only difference between the three is the location of the fulcrum, or piveting point. A first class lever is like
your everyday crowbar. The fulcrum is in the middle with the resistance force, the load, on one end and the effort force on the other.An example of a second class lever is a wheelbarrow. On a second class lever the fulcrum is on the end,
the resistance force, the load, is in the middle,and the effort is at the other end.A baseball bat is an example of a third class lever.The fulcrum is on the end of one side, the effort force is in the middle, and the resistance force,the load, is at the the top.