balance Flashcards
what is balance?
The ability to neutralise forces that disturb equilibrium
what are the two types of balance?
- static balance
- dynamic balance
what is static balance?
The ability to hold a stationary position
what is dynamic balance?
ability to hold a moving position to execute an outcome
what is the centre of gravity?
- where all of the body’s mass is equally distributed
what is the line of gravity?
- imaginary vertical line passing downwards through the centre of gravity to the ground or surface the person is on
what is the base of support?
Area bound by the outermost regions of contact between a body and support surface.
what is balance affected by?
- Mass of the object
- Size of the base of support (BOS)
- Height of the centre of gravity (COG) above base of support
- Position of line of gravity (LOG) relative to base of support
- Increasing BOS in direction of oncoming force
- Positioning COG near edge of BOS in direction of oncoming force
how does the mass of the object affect balance?
The greater the mass of an object = the greater stability
how does the size of the base of support affect balance?
The greater the area of support, the greater the degree of stability.
how does the height of COG above the base of support affect balance?
The higher the centre of gravity above the base of support = the less stable the object is
how does the position of the line of gravity relative to the base of support affect balance?
The closer the line of gravity is to the limits of the base of support = the less the degree of stability of the object.
how does increasing the size of the base of support in the direction of the oncoming force affect balance?
wide stance = increase base of support = increase balance
how does horizontally positioning the COG near the edge of the base of support on the side of the external force affect balance?
leaning to the left or right will increase stability
