| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1G20.00 | Accelerated Reference Frames | | |
| 1G20.10 | candle in a bottle | PIRA 1000 | |
| 1G20.10 | candle in a bottle | 1G20.10 | Drop a candle burning in a large flask. |
| 1G20.10 | candle in a bottle | TPT 1(1),34 | Drop, toss up, and throw a bottle containing a lighted candle. |
| 1G20.10 | gravitational pressure in circulatio | Fl-3 | Drop a plexiglass container with a lighted candle. |
| 1G20.10 | bottle and candle | Fl-2 | Throw a jug with a lighted candle into the air. |
| 1G20.10 | candle in a bottle | 8-3.7 | A lighted candle in a glass chimney in a large container will burn for a long time unless dropped. |
| 1G20.10 | candle in a bottle | M-98 | A candle in a dropped chimney goes out after 2-3 meters due to absence of convection currents. |
| 1G20.10 | candle in dropped jar | Disc 01-19 | Drop a closed jar containing a burning candle. |
| 1G20.11 | falling candle doesn't work | AJP 32(1),61 | Hey, when these guys tried it they could drop the bottle 25 feet and the candle only went out upon deceleration. |
| 1G20.13 | elevator paradox | AJP 34(2),172 | A large hydrometer flask in a beaker of water remains at its equilibrium position as the beaker is moved up and down. |
| 1G20.14 | four demos | AJP 30(12),929 | Four demos: Drop a weight on a spring balance, drop a cup with weights on rubber bands, drop a candle in a bottle, drop or throw a tube of water containing a rising cork. |
| 1G20.20 | ball in a thrown tube | PIRA 1000 | |
| 1G20.20 | ball in a thrown tube | 1G20.20 | Invert and throw a 4' plexiglass tube full of water that contains a cork. The rising cork will remain stationary during the throw. |
| 1G20.20 | ball in a thrown tube | TPT 1(1),34 | Throw or drop long water filled tube containing a cork. Also try a rubber stopper or air bubble. |
| 1G20.20 | falling bubble | Fl-6 | A rising bubble in a jar remains stationary while the jar is thrown. |
| 1G20.20 | ball in a thrown tube | 8-3.4 | A long thin tube with an air bubble is tossed across the room. |
| 1G20.21 | modified falling tube | TPT 1(1),34 | Couple a lead weight and cork with a spring and put the assembly in a tube of water so the cork just floats. Drop the tube and the cork sinks. |
| 1G20.21 | ball in a falling tube | 8-3.3 | A cork remains submerged in a falling jar of water. Diagram of a mousetrap mechanism. |
| 1G20.22 | ball in a falling tube | M-97 | A ball and tube are dropped simultaneously from the ceiling. The ball strikes the bottom of the tube after hitting the floor. |
| 1G20.30 | leaky pail drop | PIRA 1000 | |
| 1G20.30 | drop pail with holes | AJP 31(5),391 | First drop a can with several vertical holes to show no flow in free fall, then rig up a pulley system to accelerate the pail greater than g (shown), and the top hole will issue the longest stream of water. |
| 1G20.30 | leaky pail drop | TPT 1(1),34 | Punch a hole in the bottom of a can and fill it with water. When you drop it, no water will run out. |
| 1G20.33 | pop the balloon | TPT 12(6),366 | This device pops a balloon if it is not in free fall. Toss it to a student to give them a real bang. |
| 1G20.34 | vanishing weight | 8-3.1 | A strip of paper pulled from between two weights will tear except when dropped. |
| 1G20.36 | vanishing weight | Mf-2 | Weights compress the tube of an air whistle until in free fall when the whistle blows. |
| 1G20.38 | Einstein's birthday present | Fl-5 | A ball attached to a tube by a weak rubber band is pulled to the tube in free fall. |
| 1G20.40 | cup and weights | PIRA 500 | |
| 1G20.40 | cup and weights | 1G20.40 | Hang 1 kg weights from heavy rubber bands extending from the center over the edge of a styrofoam bucket. Drop the thing. |
| 1G20.40 | cup & weights | TPT 21(8),521 | Further discussion of the R. D. Edge article describing dropping a styrofoam cup with weights suspended over the edge by rubber bands. |
| 1G20.41 | vanishing weight - dropping things | TPT 1(1),34 | 1) Drop a mass on a spring scale, 2) Drop an object with a second object hanging by a rubber band, 3) stretch a rubber band over the edge of a container and drop. |
| 1G20.42 | vanishing weight | 8-3.13 | A parcel scale is dropped with a bag of sand on the platform. |
| 1G20.43 | elevators | TPT 16(6),391 | A battery powered circuit is constructed in a box causes a light to glow while a spring scale is unloaded. The light will glow while a loaded spring scale is in free fall. |
| 1G20.44 | drop a mass on a spring | TPT 1(1),35 | Drop a frame with an oscillating mass on a spring and the mass will be pulled up but stop oscillating. |
| 1G20.45 | dropped slinky | PIRA 1000 | |
| 1G20.45 | dropped slinky | 1G20.45 | |
| 1G20.45 | dropped slinky | Disc 01-18 | Hold a slinky so some of it extends downward, then drop it to show the contraction. |
| 1G20.46 | vanishing weight | 8-3.11 | Drop a frame containing three different masses hanging on identical springs or a frame with a pendulum. |
| 1G20.47 | dropping pendulum | TPT 1(1),34 | Suspend a pendulum from a stick. Drop the stick when the pendulum is at an extreme and the stick and pendulum will maintain the same relative position. |
| 1G20.55 | falling frame shoot | AJP 48(4),310 | A falling cage is equipped with two guns lined up with holes in two sheets and a net to catch the ball. The balls don't go through the holes unless the cage is in free fall. |
| 1G20.60 | elevators | M-103 | Quickly raise and lower a spring balance-mass system. |
| 1G20.61 | elevators | TPT 11(6),351 | Discussion of the elevator problem and a car going around a curve. |
| 1G20.62 | elevators | 8-3.12 | A rope over a ceiling mounted pulley has a weight on one side and a spring scale and lighter weight on the other side. |
| 1G20.63 | elevators | 8-3.15 | An apparatus to quantitatively demonstrate the forces acting on a passenger standing on a spring scale in an elevator. Diagrams. |
| 1G20.64 | elevator | AJP 33(8),xi | The elevator is a spring scale and potentiometer combination. |
| 1G20.70 | local vertical with acceleration | PIRA 500 | |
| 1G20.70 | accelerometer on tilted air track | 1G20.70 | The water surface of a liquid accelerometer on a tilted air track remains parallel to the angle of the air track during acceleration. |
| 1G20.70 | showing acceleration | TPT 28(8),546 | Put a cart on an incline, mount a liquid accelerometer on the cart and mark the reference at rest, give the cart a push up the incline and observe the accelerometer as the car goes up, stops, and comes back down. |
| 1G20.70 | accelerometer | 8-3.8 | A Lucite box containing colored glycerine mounted on a cart is rolled down an incline or given a push up an incline. |
| 1G20.70 | local vertical with acceleration | Disc 02-11 | Place a liquid accelerometer on an air track glider on an inclined air track |
| 1G20.75 | helium balloon accelerometer | AJP 31(4),302 | Put two students in a car with a helium balloon. |
| 1G20.75 | accelerometer | 8-3.10 | A balloon filled with air is suspended from the top and a helium balloon from the bottom of a clear box mounted on wheels. |
| 1G20.76 | suspended ball accelerometers | PIRA 1000 | |
| 1G20.76 | float accelerometer | TPT 2(4),176 | A float in a glass of water on an accelerating cart. Also, moving in uniform circular motion. |
| 1G20.76 | accelerometer | 8-3.2 | Two flasks full of water, one has a cork ball, the other has a heavier than water ball. |
| 1G20.76 | accelerometer | 8-3.9 | An iron ball is suspended from the top and a cork ball from the bottom of a clear box filled with water mounted on wheels. |
| 1G20.76 | accelerometers | Disc 13-16 | Two jars of water, one has a light ball suspended from the bottom, the other has a heavy ball suspended from the top. |
| 1G20.79 | accelerometer | 8-5.8 | A design for a high quality accelerometer. |
| 1G20.80 | cart and elastic band | PIRA 1000 | |
| 1G20.80 | cart and elastic band | 1G20.80 | Place an accelerometer (cork on a string in a clear water filled box) on a cart and attach a strong rubber band to one end. Push the cart down the bench while holding the rubber band. |
| 1G20.85 | acceleration pendulum cart | PIRA 1000 | |
| 1G20.85 | acceleration pendulum cart | 1G20.85 | Push a skateboard across the lecture bench so an attached pendulum is displaced at a constant angle. |
| 1G20.87 | accelerometer | AJP 34(9),825 | The bubble of a spirit level moves in the direction of acceleration. |
| 1G20.87 | accelerometer | TPT 21(3),184 | Place a carpenter's level on Fletcher's trolley and use the bubble as an accelerometer. |
| 1G20.88 | accelerometer | M-289 | A discussion of "U" tube manometers for use as accelerometers. |