By: Bruno Freire

What is a Third Class Lever?

Definition: A lever where the effort is located between the fulcrum and the load.

A lever is in fact one of the simplest mechanical devices ever created. All a lever basically is, is a type of stick that helps to produce useful movement.

First Class Lever

Second Class Levers

Third Class Levers

Third Class levers are different from the others in that the effort is placed between the load and the fulcrum, and the effort must travel a shorter distance and be greater than the load.

Third Class Levers in Everyday Life….....

Effort

Fulcrum

LoadPower

Shovel

They even use Third Class Levers in the construction industry when they use power shovels to help dig up and move dirt.

In the example of someone lifting a weight the elbow would act as the fulcrum, and the weight would become the load. As you lift the weight your biceps contract, providing the effort that will then allow you to lift the weight easily.

Questions……1. Where is the effort located in a

Third Class Lever?

Answer:The effort in a third class lever is located between the fulcrum and the load

The End