Simple Machines

• 1M20.11 - Pulleys and Pulley Systems
• 1M20.20 - Block & Tackle
• 1M20.36 - Work of a Screw
• 1M20.37 - Archimedes' Screw
• 1M20.40 - 1st, 2nd, and 3rd Class Levers
• 1M20.60 - Wheel & Axle
• 1M20.65 - Non-Circular Wheels