Third Class Levers. By: Manyi, Daniel and Ella. What is a Third Class Lever?. Definition: A lever where the effort is located between the fulcrum and the load.
By: Manyi, Daniel and Ella
Definition: A lever where the effort is located between the fulcrum and the load.
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.
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.
To measure force: Force of Gravity = (mass of the object) x (strength of earth’s gravitational field)
Formula: Fg= mg
To measure work: (Work in joules) = (force in Newtons) x (distance in metres)
Formula: W= Fd
Tweezers: 0.001 kg
Rock: 1.3 kg
Broom: 0.5 kg
Tongs: 0.015 kg
The effort in a third class lever is located between the fulcrum and the load
Fulcrum on a broom?