1Q10  Moment of Inertia
            .31 Rolling Bodies on Incline
1Q20  Rotational Energy
            .10 Angular Acceleration Machine
            .20 Bike Wheel Angular Acceleration
            .30 Spool on Incline
            .35 Bike Wheel on Incline
            .50 Hinged Stick and Ball
            .55 Penny Drop Stick
1Q30  Transfer of Angular Momentum
            .25 Satellite Derotator
1Q40  Conservation of Angular Momentum
            .10 Rotating Stool with Weights
            .15 Rotating Stool and Long Bar
            .23 Centrifugal Governor
            .30 Rotating Stool and Bicycle Wheel
            .40 Train on a Circular Track
            .45 Wheel and Brake
            .50 Tail Wags Dog
            .70 Marbles and Funnel
            .80 Hero's Engine
            .82 Air Rotator with Deflectors
1Q50  Gyros
            .20 Gyroscope with Adjustable Weights
            .22 Bike Wheel on Gimbals
            .23 Bike Wheel Precession
            .25 Double Bike Wheel
            .30 Motorized Gyroscope
            .35 Gyroscopic Stability
            .51 Precessing Illustrated
            .72 Ship Stabilizer
1Q60  Dynamic Stability
            .30 Tippy Top
            .35 Football Spin
            .40 Stable and Unstable Axes of Rotation
            .51 Spinning Rod and Hoop on Wire
            .80 Static/Dynamic Balance
            .95 Wobbling Football