SOC 20 - Levers Flashcards
1
Q
Triangle - Fulcrum
A
Joint - 1st class when it is in the middle
2
Q
Square - Load
A
Weight - 2nd class when it is in the middle
3
Q
Arrow - effort
A
Muscle - 3rd class when it is in the middle
4
Q
Mechanical advantage
A
When the ouput of the lever us greater than the input
5
Q
Mechanical disadvantage
A
When the input of the lever is greater than the output
6
Q
First class lever
A
- Fulcrum is in the middle
- Example: tricep dip
7
Q
Second class lever
A
- Load is in the middle
- example: calf raise
8
Q
Third class lever
A
- effort is in the middle
- example: bicep curl
9
Q
Fulcrum
A
The point at which the lever rotates
10
Q
Load
A
The force that is applied by the lever system
11
Q
Effort
A
The force that is applied by the user of the lever system
12
Q
Axis
A
Imaginary straight line around which a body or object rotates
