Levers Flashcards
What is the Fulcrum?
The joint where the lever arm pivots.
What is the Effort?
The force applied by the muscles to the lever arm.
What is the Load?
Resistance against the pull of the muscles on the lever arm.
How many Lever Systems are there?
3
Give a Sporting example of the 1st Class.
Elbow Extension - Football Throw in, Press up.
Give a Sporting example of the 2nd Class.
Ankle Plantar Flexion - Pointing Toes, Running.
Give a Sporting example of the 3rd Class.
What is the Mechanical Advantage Equation?
Mechanical Advantage = Effort Arm / Resistance Arm.
Which class has Mechanical Advantage?
2nd.
What are the Pros of Mechanical Advantage?
Can produce High Force.
What are the Cons of Mechanical Advantage?
Small Range of Movement.
Slow Speed of Movement.
Which class has Mechanical Disadvantage?
1st and 3rd.
What are the Pros of Mechanical Disadvantage?
Big Range of Movement.
Fast Speed of Movement.
What are the Cons of Mechanical Disadvantage?
Cannot produce a High Force.
