PE - levers & planes Flashcards
(17 cards)
1
Q
3 parts of lever
A
- fulcrum
- resistance
- effort
2
Q
fulcrum - lever
A
pivot point / support
3
Q
load / resistance - lever
A
weight being moved
4
Q
effort - lever
A
force applied to move the resistance
5
Q
1st class lever
A
- F in between E and L
eg. header in football
F = joint
E = muscle at the back of neck
L = weight of head
6
Q
2nd class lever
A
- L in between F and E
eg. calf raise
L = weight of body
F = ankle joint
E = calf muscles
7
Q
3rd class lever
A
- E in between L and F
eg. bicep girl
E = bicep muscle
L = weight held in hand
F = elbow joint
8
Q
mechanical advantage - equation
A
effort arm / resistance arm
9
Q
mechanical advantage
A
- how much a lever amplifies the force applied
- higher advantage = easier task
*high mechanical advantage => second class
*low mechanical advantage => third class
10
Q
sagittal plane
A
- left or right halves
- forward / backward
eg. flexion, extension
eg. running, bicep curls, squats
11
Q
frontal plane
A
- front and back
- side to side
eg. abduction and adduction
eg. jumping jacks
12
Q
transverse plane
A
- top and bottom
- rotational
eg. rotation
eg. spinning in dance, twisting in shotput
13
Q
sagittal axis
A
- runs horizontally from front to back
- frontal plane
eg. abduction, adduction
14
Q
frontal axis
A
- runs horizontally from side to side
- sagittal plane
eg. flexion, extension
15
Q
longitudinal axis
A
- runs vertically top to bottom
- transverse plane
eg. spinning, twisting
16
Q
plane - definition
A
an imaginary line that splits the body into 2 and depicts the direction of movement
17
Q
axis - definition
A
an imaginary line perpendicular to the plane
