Levers

• The fulcrum is the point of movement, generally at the centre of a joint
• The load is the body's weight or an external object. This will move as a result of the effort on the lever
• The effort is a muscular force that moves the load
• Here is a first class lever label the parts of it with load, effort and fulcrum

  :

  A) Load

  B) Effort

  C) Fulcrum

  
• Here is a second class lever, label the parts of it with load, fulcrum and effort

  :

  A) Effort

  B) Load

  C) Fulcrum

  
• Here is a third class lever, label with the load, effort and fulcrum

  :

  A) Fulcrum

  B) Effort

  C) Load

  
• 1st class levers:

  • Fulcrum is in the middle
  • Sporting example: shooting in netball
  • Occurs at the neck joint when you are raising your head
• 2nd class levers:

  • Load is in the middle
  • Sporting example: plantar flexion - ballet, sprinting
  • Occurs at the ankle joint
• 3rd class lever:

  • Effort is in the middle
  • Sporting example: lifting a weight during a bicep curl
  • Occurs at the elbow joint