Soc 20: Levers Flashcards
1
Q
What is the axis
A
An imaginary straight line around which a body or object rotates
2
Q
What is the fulcrum
A
The point around which the lever rotates
3
Q
Load
A
The force that is applied by the lever system
4
Q
Effort
A
The force that is applied by the user of the lever system
5
Q
How does it work
A
A lever is a rigid structure, such as a bar or bone, that rotates around an axis.
6
Q
How does the first class lever system work
A
In a first class lever, the fulcrum sits in the middle, between the load and the effort.
A boat is a good example
7
Q
How does the second class lever system work
A
In a second class leavers, the load sits between the fulcrum and effort A wheelbarrow is a good example
8
Q
How does a third class lever system work
A
In a third class lever, the effort is applied between the fulcrum and the load.
The spade is a good example
