movement analysis Flashcards
1
Q
What is a lever?
A
a solid bar that moves around a fixed point when force is applied
2
Q
what are the 4 parts of a lever?
A
lever
fulcrum
effort
load
3
Q
what is a fulcrum?
A
pivot point
3
Q
in a diagram what shapes are the parts of the lever?
A
lever - solid bar
fulcrum - triangle
load - rectangle
effort - arrow
4
Q
what is the effort?
A
force applied to lever
5
Q
what is the load?
A
the resistance moved by the lever
6
Q
What is a first class lever?
A
elbow extension
load - fulcrum - down effort arrow
7
Q
what is a second class lever
A
plantar-flexion at ankle
fulcrum - load - up effort arrow
8
Q
what is third class lever?
A
fulcrum - effort - load
elbow flexion, knee flexion and extension
