Levers And Planes Flashcards
What is in the middle of a first class lever
The fulcrum
What is in the middle of a second class lever
The load
What is in the middle of a 3rd class lever
Effort
Define fulcrum
The fixed point or axis of the lever. Where lever turns
Define load
The weight or resistance that the lever is moving
Define effort
The force applied to move the load
Define mechanical advantage
The efficiency of a lever. If something has low MA it means the effort arm is shorter than its load arm but if it has a high MA the effort arm is longer than its load arm
Equasion for mechanical advantage
Effort arm/load arm
Define effort arm
Distance between effort and fulcrum
Define load arm
Distance between load and fulcrum
What plane does the sagittal axis go with
Frontal plane
Which plane does the longitudinal axis go with
Transverse plane
What plane does the transverse axis go with
Sagittal plane
Whats the acronym to remember the planes and axisss
Some Footballers -Like To -Take Shots
What movements does the sagittal plane allow
Flexion and extension e.g. sprinting
What movements does the transverse plane allow
Rotational movements around the longitudinal axis e.g. 360 twist
What movement does the frontal plane allow
Abduction and adduction e.g. cartwheel
Define plane
An imaginary line that shows the direction of movement
Define axis
An imaginary line through the body around which it rotates
Where does the line pass in a transverse axis
Passes horizontally through the body e.g. like a table footballer
Where does the line pass through in the longitudinal axis
Passes vertically through the body from top to bottom
Where does the line pass through in a sagittal axis
Passes through the body from front to back
