Lever class

First Class

Second Class

Third Class

Examples

Pliers
Claw hammer
Oar
Scissor

Wheelbarrow
Can-opener
Nutcracker

Fishing rod
Our arms
Ice tongs
Broom

What is it?

Fulcrum is between the load and effort

Load is between the fulcrum and effort

Effort is between the fulcrum and load

Reduce effort?

YES

YES

NO

Reduce distance moved by effort?

NO

NO

YES

Change direction of effort?

YES

NO

NO