Free Body Diagram and Vectors

Question 1

observational strategies

Answer 1

FBD

Vectors

Question 2

FBD: how to

Answer 2

isolated drawing of rigid object

• straight lines for simple bones (arms/legs)
• circles for joint centres
• triangle for chest
• square for pelvic gurdle
• circle for head

Question 3

benefits and limitations to FBD

Answer 3

Perspective
-which plane is movement happening in?
Depth
-limbs represented will by 2D stick figure
ROM
Subjectivity
-misrepresent useful info
-correct joint centres

Question 4

vectors

Answer 4

• arrow connecting 2 points
• has direction, magnitude, point of application
• represent forces, motion
• can be broken down into components

Question 5

adding vectors

Answer 5

• tail to tail, resultant attaches the tips

- break down into components and add them