The force of you or a machine pushes on the lever
input force or (the force we apply to the machine
The load / output force The force that you are lifting
output force or (the force required to move the object without using the machine)
Fulcrum
The fulcrum is the pivot point of the lever.
The fulcrum is always on the bottom of the lever.
The fulcrum changes spots on the lift arm depending on what class of lever is being used
Their is little friction in the middle of the fulcrum and the lift arm.
Load and effort arm
The load arm changes length depending on what class of lever you use.
the effort arm also changes length depending on what class of lever you use.
The mechanical advantge and effeciency changes depending on the length of the load and effort arm and friction
Matt's class 1 levers Matts Class 2 Levers Matts class 3 Levers sources
Matts page on Levers
The input force
The force of you or a machine pushes on the leverinput force or (the force we apply to the machine
The load / output force The force that you are lifting
output force or (the force required to move the object without using the machine)Fulcrum
The fulcrum is the pivot point of the lever.The fulcrum is always on the bottom of the lever.
The fulcrum changes spots on the lift arm depending on what class of lever is being used
Their is little friction in the middle of the fulcrum and the lift arm.
Load and effort arm
The load arm changes length depending on what class of lever you use.
the effort arm also changes length depending on what class of lever you use.
The mechanical advantge and effeciency changes depending on the length of the load and effort arm and friction