Levers Flashcards
1
Q
Lever
A
How the body creates movement through force
2
Q
3 parts of a lever
A
Fulcrum
Load/resistance
Effort
3
Q
Load(force)
A
The weight or resistance of the lever arm and anything that is attached to it
4
Q
Effort (force)
A
The force of muscular contraction applied to move the lever
5
Q
Fulcrum
A
The pivot or fixed point about which the lever moves
6
Q
Effort arm
A
Perpendicular distance between the Effort and the fulcrum
7
Q
Load arm
A
The perpendicular distance between the load and the fulcrum
8
Q
Class one lever
A
Fulcrum in the middle
9
Q
Class 2 lever
A
Load in the middle
10
Q
Class 3 lever
A
Effort in the middle
11
Q
Mechanical advantage
A
Effort arm larger than load arm
Always class 2 lever
12
Q
Mechanical disadvantage
A
Load arm>effort arm
Class 3
