Equilibrium (Chapter 5) Flashcards
Equilibrium
when all forces applied cancel each other out and the body is at rest
Static Equilibrium
the body is not moving or rotating and all forces/torques add up to 0
Dynamic Equilibrium
moving at a constant velocity
Stability
the extent to which a body will resist its state of equilibrium
Factors affecting stability
- base of support
- centre of gravity
- body mass
- friction
Base of support
the area bound by the outside edges of the body parts in contact with the supporting surface
Base of support & stability
increasing base of support increases stability
Centre of gravity
the point around which its weight is balanced, generally found around naval (belly button)
Centre of gravity & stability
lower centre of gravity means more stable
Line of gravity
the direction in which the gravity acts
Line of gravity & stability
when the line of gravity acts through the centre of the base of support, stability is increased
Body mass
how much a body weighs
Body mass & stability
increased mass = increased stability
Friction & stability
increased friction = increased stability
Axis
point about which the lever rotates
