A lever is a simple machine with a rigid beam or rod pivoted at a fixed hinge (the fulcrum)
Parameters:
(1) location of fulcrum along linear axis
(2) relative location of effort/force and load
|
Fulcrum
|
Other
|
Lever Class
|
Example
|
|
between effort and load
|
NA
|
Class 1
|
pry or crowbar
|
|
at or near one end
|
force at other end with load in between
|
Class 2
|
wheelbarrow
|
|
at or near one end
|
load at other end with force in between
|
Class 3
|
steam shovel
|
Alternatively
|
End
|
In Between
|
Other End
|
Class
|
|
load
|
fulcrum
|
force
|
1
|
|
fulcrum
|
load
|
force
|
2
|
|
fulcrum
|
force
|
load
|
3
|
