Levers Flashcards
1
Q
Levers Definition
A
Allow our tendons and muscle to move our limbs
2
Q
Lever Composites
A
Beams and Fulcrum
3
Q
Lever Systems definition
A
Two Forces that act on an objects rotation in opposite directions
4
Q
Lever System Forces
A
Load Force, Effort Force
5
Q
Lever System Class 1
A
Fulcrum lies between the effort and the load forces
6
Q
Lever System Class 2
A
Fulcrum at one end, Effort Force opposite end, Load Force lies in the middle
7
Q
Lever System Class 3
A
Fulcrum at one end, Load Force at the opposite end, Effort Force lies in the middle
8
Q
Sport Lever Example Class 1
A
Triceps Elbow Joint
- Throwing Motion (arm extension)
ex. Javelin, Tennis Swing, Baseball Pitch - Fulcrum=Elbow Joint
- Effort= Triceps
- Load=Weight of the arm and object released
9
Q
Sport Lever Example Class 2
A
Plantar Flexion- Calf and Ankle Joint
- Calf Raises
- Fulcrum=Ankle Joint+Balls of the Foot
- Load Force=Weight of the body
- Effort Force=Gastrocnemius Muscle
10
Q
Sport Lever Example Class 3
A
- Knee Extension+Bicep and Elbow joint
- Running, Bicep Curls
- Fulcrum=Elbow Joint
- Effort Force=Bicep
- Load Force=Weight
