General Examples |
Description |
Body Example |


|
Crowbar
Scissors
Pliers
Seesaws |
1st class
The Fulcrum is between the Effort and the Resistance.
EFR 
|
Head balance on vertebral column
Triceps |

|
Wheelbarrow
Doors
Bottle Opener
Paper Cutter |
2nd Class
The Fulcrum is on one end, while the resistance is closest to the Fulcrum, then the Effort is on the other end.
FRE
|
standing up on ball of foot
(ball of foot is Fulcrum) (Effort is soleus and gastrocnemius at calcaneus - Resistance is body weight) |


|
Tweezers
Snow Shovel
Broom |
3rd Class
The Fulcrum is on one end, while the effort is closest to the Fulcrum, and the Resistance is on the other end.
FER (or REF)
|
Biceps acting at the elbow joint
Deltoid |