Soc 20 - Levers Flashcards
What is a lever?
A system of muscles and bones working together to bring about movement
What is a fulcrum?
The point around which the lever rotates
What is the load?
Output of thelever systerm (lifting of the weight)
What is effort?
Force applied by the user of a lever system
What is a first class lever?
It has the fulcrum in the middle (F of FLE)
Example: Tricep dips
What is a second class lever?
Where the load is in the middle (L of FLE)
Example: calf raises
What is a third class lever?
It has the effort in the middle (E of FLE)
Example: bicep curls
What is a mechanical advantage?
It is when you put in less effort than you get out (first and second class levers)
What is mechanical disadvantage?
When you put in more effort than you get out (third class lever)
