Biomechanical Principles for Analysis of Movement (Part 4) Flashcards
1
Q
What is equilibrium?
A
An object said to be in equilibrium when there are no unbalanced forces or torques acting on it.
Static equilibrium; an object that is completely motionless.
Dynamic equilibrium; an object’s velocity must be constant.
2
Q
How is stability and balance related to equilibrium?
A
Stability is the resistance to the disruption of equilibrium.
Balance is the ability to control of equilibrium.
Increased stability means it is more difficult to unbalance an object and vice versa.
3
Q
What are factors that affect stability?
A
- Base of support
- Centre of gravity
- Body mass
- Friction between the body and surface or surfaces contacted.
4
Q
What are the 3 components of a lever and what are the types of levers?
A
Components:
- An axis
- A force
- A resistance
Types of levers:
- First class; FAR
- Second class; FRA
- Third class; AFR
