2.1 Lever Systems And Mechanical Advantage Flashcards
1
Q
Lever
A
A rigid bar (bone) that turns about an axis to create movement. The effort (also known as force) to move the lève comes from the muscle(s). The leaver contains the load/resistance from gravity.
2
Q
Fulcrum
A
The fixed point the lever is placed on and it requires effort (from the muscles) to move it.
3
Q
Mechanical advantage
A
The efficiency of a working lever, calculated by:
Effort \ weight (resistance) arm
4
Q
Effort arm
A
The distance from the effort to the fulcrum
5
Q
Load arm
A
The distance from the load to the fulcrum.
