Soc20 Levers Flashcards
1
Q
What is a lever
A
It is a system of muscles and bones working together to create a movement.
2
Q
How does it work?
A
A lever has four parts to it: Fulcrum Effort Load Lever arm
3
Q
Fulcrum
A
The point at which the lever rotates
4
Q
Load
A
The force applied to the lever.
5
Q
Effort
A
A force applied by the person, from the body
6
Q
Lever arm
A
A rigid bar such as bone
7
Q
First class
A
Fulcrum is in the middle
8
Q
Second class
A
Load is in the middle
9
Q
Third class
A
Effort is in the middle
10
Q
Mechanical advantage
A
This happens when the result of your movement is greater than the effort put into it, this is found in first and second class levers
11
Q
Mechanical disadvantage
A
This is when more effort is put into the system then what comes out of it, this is found in third class levers, which is the most common lever
