Stability and Balance

Question 1

stability

Answer 1

objects resistance to change ( tendency to remain / return to initial position after a force)

Question 2

balance

Answer 2

maintaining equilibrium

Question 3

2 types of balance

Answer 3

passive or mechanical

Question 4

what does passive stability depend on

Answer 4

weight (heavy = more force)
area of base
horizontal distance of CoG to pivot
height of CoG

Question 5

what is potential energy when stable equilibrium

Answer 5

at a minimum
lots of work must be done to change
likely to return ti original position

Question 6

what is potential energy when unstable equilibrium

Answer 6

at or near maximum
little work to change
small movement take gravity line outside base

Question 7

what type of stability are humans

Answer 7

actively stable

Question 8

what do humans require to maintain balance

Answer 8

muscular force causing dynamic equilibrium

Question 9

how to rebalance

Answer 9

pushing on base of support (apply moment to translate the base)

Question 10

what changes to compensate active stability for passive insufficiencies

Answer 10

muscular actions

Question 11

reflex balance

Answer 11

ankle / hip strategy
stepping
arm circles