1M10  Work
            .20 Pile Driver
1M20  Simple Machines
            .01 Simple Machines
            .11 Pulley Advantage
            .15 Pulley and Scales
            .40 Levers
1M30  Non-Conservative Forces
1M40  Conservation of Energy
            .10 Bowling Ball Pendulum (Nose Basher)
            .10 Swinging Bowling Ball
            .15 Galileo's Pendulum
            .20 Loop the Loop
            .25 Energy Well Track
            .33 Triple Track Energy Conservation
            .41 Ballistic Pendulum
            .50 Maxwell's Yo-Yo
            .63 x²Spring Energy Dependence
            .64 Spring Pong Gun
            .67 Spring Jumper
            .91 High Bounce Paradox
            .95 Hand Cranked Generator
            .97 Generator Driven By Falling Weight
1M50  Mechanical Power
            .10 Prony Brake