Lecture 3-Physical Biomechanics III Flashcards
1
Q
Resolution of force
A
Dividing a force into its components (Its rotary and non-rotary components) or replacing a single vector by two or more equivalent forces
2
Q
Composition of forces
A
The combination of the forces acting on an object into one net resulting effect
3
Q
Load
A
An outside force or group of forces acting on an object
4
Q
Mechanical stress
A
The internal reaction or resistance to the external load
5
Q
What are the three principles of stress?
A
Tension
Compression
Sheer
6
Q
Mechanical Strain
A
Deformation or change in dimensions of an object because of the forces (load) applied to the object
7
Q
Standing upright, what is the non rotary degrees?
A
1 at 0 degrees .97 at 15 degrees .86 at 30 degrees .71 at 45 degrees .50 at 60 degrees .26 at 75 degrees 0 at 90 degrees .26 at 105 degrees .50 at 120 degrees .71 at 135 degrees .86 at 150 degrees .97 at 165 degrees 1.0 at 180 degrees
8
Q
Standing upright, what is the rotary degrees?
A
0 at 0 degrees .26 at 15 degrees .50 at 30 degrees .71 at 45 degrees .86 at 60 degrees .97 at 75 degrees 1.0 at 90 degrees .97 at 105 degrees .86 at 120 degrees .71 at 135 degrees .50 at 150 degrees .26 at 165 degrees 0 at 180 degrees
9
Q
What occurs when a person is side-lying?
A
The rotary and non-rotary components switch
