A class 3 lever is a type of lever where the effort is applied between the fulcrum and the load. This means that the load is closer to the fulcrum than the effort, resulting in a greater distance over which the effort must be applied to move the load. Class 3 levers are mechanically inefficient and require a lot of effort to lift a load.
One example of a class 3 lever is a pair of tweezers. In this case, the fulcrum is located at one end of the tweezers, the effort is applied at the opposite end, and the load (such as a small object to be picked up) is located in between. The effort must be applied over a greater distance in order to lift the load, making it more difficult to use compared to other types of levers.
Describe a class 3 lever and give one example of a class 3 lever.
1 answer