Mechanical Principles

Basically there are 4:

1. Stability
2. Motion
3. Leverage
4. Force

STABILITY

• the lower the COG to the BOS, the greater the stability
• the nearer the COG to center of BOS, more stable
• increase stability by increasing width of BOS

MOTION

• Linear motion - movement in straight line; one point to another
• Rotary motion - movement around an axis
• 3 most important Newton's Law:

1st Law - Inertia

2nd Law - Acceleration

3rd Law - Action-Reaction

LEVERAGE

• 1st Class : resistance-fulcrum-force
• 2nd Class : fulcrum-resistance-force
• 3rd Class : fulcrum-force-resistance

FORCE

• Production; from muscles. Stronger muscle will produce greater force
• Application; effective when applied in direction of travel
• Absorption; impact of force is gradually reduce in distribution to large surface