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Centre of mass
Is the single point which represents all the spread out of mass of the body. “The point of balance of the body”
Balance
The centre of mass must be over the base of support. Have to avoid toppling by maintaining centre of mass in the centre of the body
Toppling
Weight acting vertically at the centre of mass to one side of the near edge of base of support.
Used by divers or gymnasts
Stability
If an object is over the base of support it is said to be in equilibrium. If a slight movement of the object will make it topple the object is then an unstable equilibrium.