lever systems flashcards
Studied by 0 people
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/18
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
19 Terms
what are the 3 components of levers?
fulcrum/pivot
resistance / load
effort
what makes a first order lever?
the fulcrum is always in the middle
how do you represent a fulcrum in a drawing of a lever?
using a triangle below the line
what is the only example of a first order lever system?
elbow extension - eg, for tricep extension
what makes a second order lever?
when the load/resistance is always in the middle
what is the only example of a second order lever?
ankle joint - eg, for doing calf extensions
which way does the load arrow always act towards?
downwards
which way does the effort arrow always act towards?
upwards
what makes a third order lever?
when effort is in the middle
what are examples of a third order lever system?
everything in the body other than the elbow extension and ankle
eg, bicep curls - elbow flexion
what is the accronyme used for remembering the levers?
123 FLE
what is the resistance arm?
the distance between the fulcrum and the resistance
what is the effort arm?
the distance between the effort and the fulcrum
what is the indication of a mechanical advantage?
when the effort arm is longer than the resistance arm
what is the advantage of a second order lever system?
can carry heavy loads without that much effort used
eg, walking every day - calfs
what is a disadvantage of a second order lever system?
performers have slow speeds of movement - can lift high loads but slowly
majority of effort is generated by knees and hips
what is the advantage of a third class lever system?
performers have high speeds of movement
what is the disadvantage of a third class lever system?
cant lift heavy loads