centre of mass and stability

centre of mass

the point in which a body is balanced in all directions and where weight will act from

stability

the ability of a body to resist motion and remain at rest

4 things that affect stability

1. mass of the body- the greater the mass the greater the inertia causing a greater stability

2. height of centre of mass- the lower the centre of mass the greater the stability

3. the size of the base of support- the greater the size of the base of support the greater the stability

4. the line of gravity- if the line of gravity is in the middle the greater the stability

as the high jump technique changed the centre of mass goes below the bar meaning less force is needed to achieve the same height.