10. Finding Center of Gravity

1J10.1 Center of Gravity of Irregular Shape 1J10.2 Meter Stick on Fingers

11. Exceeding Center of Gravity

1J11.1 Leaning Tower of Lire 1J11.2 Double Cone Rolling Up Incline

20. Stable, Unstable and Neutral Equilibrium

1J20.1 Stability of Block, Cone and Sphere

20. Static Torque

1J40.20 Torque Apparatus