Describe each class of lever and explain the characteristics of each?
Question: Describe each class of lever and explain the characteristics of each?
# Blog Post: Levers and Their Classes
Levers are simple machines that help us do work with less effort. A lever consists of a rigid beam and a fixed point called a fulcrum. By applying a force (effort) on one end of the beam, we can move a load (resistance) on the other end.
There are three classes of levers, depending on the position of the fulcrum, the effort and the load. Let's see what they are and how they work.
## First Class Lever
A first class lever has the fulcrum between the effort and the load. The order is effort-fulcrum-load. This type of lever can change the direction and the magnitude of the force. For example, a seesaw, a crowbar and a pair of scissors are first class levers.
## Second Class Lever
A second class lever has the load between the fulcrum and the effort. The order is fulcrum-load-effort. This type of lever can increase the force, but not change its direction. For example, a wheelbarrow, a bottle opener and a nutcracker are second class levers.
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