center of gravity, stability and mobility

Question 1

What is the center of gravity?

Answer 1

total effect of the force of gravity on a whole body or system. the center of the gravity is the balance point of a system

Question 2

What is the base of support?

Answer 2

area of the ground or other object enclosed by the points of contact of the athlete’s body

Question 3

what is the line of gravity?

Answer 3

plumb line falling downward from the center of gravity

Question 4

define stability?

Answer 4

resistance to disruption of equilibrium

Question 5

define balance?

Answer 5

ability to control equilibrium, adjust the body to keep the line of gravity within the base of support

Question 6

What is linear stability?

Answer 6

Resistance to being moved or having your direction of movement changed. Linear stability is related to mass and inertia

Question 7

What is rotary stability?

Answer 7

resistance to being tipped or spun in a circle

Question 8

How do we achieve stability?

Answer 8

• we can lower our center of gravity
• make it so our center of gravity is within the base of support
• wider base of support
• increased friction
• increased body mass

Question 9

How to achieve mobility?

Answer 9

• raise Center of gravity
• narrow the base of support
• Center of gravity moving to edge of or outside the base of support
• decreased body mass

Question 10

What should athletes do in contact sports?

Answer 10

athlete’s should widen their base of support in the same direction as the collision