3A10  Pendula
            .10 Simple Pendulum
            .34 Crossed Dumbell Pendulum
3A15  Physical Pendula
3A20  Springs and Oscillators
            .10 Mass on a Spring
            .30 Glider and Spring
            .35 Air Track Simple Harmonic Motion
            .40 Car Track Simple Harmonic Motion
3A40  Simple Harmonic Motion
            .10 Circular Motion vs Mass on a Spring
            .20 Circular Motion vs Pendulum
3A50  Damped Oscillators
3A60  Driven Mechanical Resonance
            .40 Driven Mass on a Spring
            .50 Resonance Reeds
3A70  Coupled Oscillations
            .10 Wilberforce Pendulum
            .25 Spring Coupled Pendula
            .28 Rubber Band Coupled Pendula
            .30 Coupled Pendula
            .70 Two Cars with Springs
3A75  Normal Modes
            .15 Two Springs Two Masses
3A80  Lissajous Figures
3A95  Non-Linear Systems