| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1M20.00 | Simple Machines | | |
| 1M20.01 | simple machine collection | PIRA 1000 | |
| 1M20.01 | simple machines | Disc 04-06 | A collection of simple machines is shown. |
| 1M20.10 | pulleys | PIRA 500 | |
| 1M20.10 | pulleys | 1M20.10 | An assortment of large pulleys can be rigged several ways. |
| 1M20.10 | pulleys | M-45 | Demonstrate what you have. |
| 1M20.11 | pulley advantage | PIRA 1000 | |
| 1M20.11 | pulley advantage | 1M20.11 | Place a mass on a string over a pulley and hold a spring scale at the other side. Repeat with a mass hanging from a single pulley in a loop of string. |
| 1M20.11 | pulley advantage | Disc 04-04 | Hang a 10 newton weight on a string passing over a pulley and measure the force with a spring scale, then hang the weight from a free running pulley. |
| 1M20.13 | pulleys | TPT 16(9),645 | Pedagogy. Good diagram. |
| 1M20.15 | pulley and scales | PIRA 1000 | |
| 1M20.15 | pulley and scales | 1M20.15 | Same as encyclopedia disc 04-05. |
| 1M20.15 | pulley and scales | Disc 04-05 | This is a counter intuitive demonstration. A frame containing a spring scale and pulley hangs from another spring scale. Look it up. |
| 1M20.20 | bosun's chair | PIRA 500 | |
| 1M20.20 | bosun's chair | 1M20.20 | Use a single pulley to help the instructor go up. |
| 1M20.20 | bosun's chair | AJP 44(9),882 | Using a block and tackle, the lecturer ascends. Full of pedagogical hints on how to do this effectively. |
| 1M20.20 | bosun's chair | M-46 | The instructor "lifts himself up by the bootstraps". |
| 1M20.25 | monkey and bananas | PIRA 1000 | |
| 1M20.25 | monkey and bananas | 1M20.25 | A wind up device and equal mass are placed at either ends of a string placed over a pulley. |
| 1M20.25 | monkey and bananas | AJP 33(4),348 | A yo-yo and counterweight are suspended over a pulley. The counterweight and yo-yo rise and fall together. |
| 1M20.25 | monkey and the coconut | AJP 33(8),662 | A steel yo-yo and steel counterwieght suspended over two low friction bearings. |
| 1M20.25 | climbing monkey | 12-5.4 | A yo-yo and a counterweight are on opposite sides on a pulley. As the yo-yo goes up and down, so does the counterweight. |
| 1M20.25 | climbing monkey | M-8e | A steel yo-yo on one side of a pulley and a counterweight on the other. As the yo-yo goes up and down, so does the counterweight. |
| 1M20.26 | climbing monkey | M-113 | Two equal masses are hung over a pulley, one of which is equipped with a cord winding mechanism. |
| 1M20.27 | windlass | M-44 | A model windlass is described. |
| 1M20.28 | climbing pirate | Mb-7 | String is wrapped around two different sized pulleys on a common axis. |
| 1M20.29 | fool's tackle | M-47 | A diagram of the "fools tackle" is shown. |
| 1M20.30 | incline plane | PIRA 500 | |
| 1M20.30 | incline plane | 1M20.30 | |
| 1M20.30 | screw and wedge | 6-3.1 | A long triangular piece of sailcloth is wound around a mailing tube to show the relationship between a screw and a wedge. Diagram. |
| 1M20.35 | big screw as incline plane | PIRA 1000 | |
| 1M20.35 | big screw | 1M20.35 | A large wood screw and nut (6"-1) show the relationship between a screw and incline. |
| 1M20.40 | levers | PIRA 1000 | |
| 1M20.40 | levers | 1M20.40 | Show the three classes of levers with a mass, bar, pivot, and spring scale. |
| 1M20.40 | levers | M-43 | The three classes of simple levers. |
| 1M20.40 | levers | Disc 04-07 | A torque bar, spring scale, and pivot are used to illustrate the three classes of levers. |
| 1M20.45 | body levers | PIRA 1000 | |
| 1M20.45 | body levers | TPT 16(6),403 | Construction and use of a device representing body levers. |
| 1M20.60 | wheel and axle | M-14c | The PIC-Kit used for demonstrating simple machines. |
| 1M20.99 | black box | 6-3.2 | Hide a mechanism in a box and try to deduce what is inside. |