| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1Q20.00 | Rotational Energy | | |
| 1Q20.10 | whirlybird (adj. ang. mom.) | PIRA 200 | A weight on a string wrapped around a wheel drives a radial rod with adjustable weights. |
| 1Q20.10 | adjustable angular momentum | 1Q20.10 | A weight on a string wrapped around a wheel drives a radial rod with adjustable weights. |
| 1Q20.10 | adjustable angular momentum | Mr-5 | A weight wrapped around a wheel drives a radial bar with adjustable weights. |
| 1Q20.10 | adjustable angular momentum | 12-4.5 | Hanging weights from three coaxial pulleys provides different applied torques to a radial bar with movable weights to provide adjustable moment of inertia. |
| 1Q20.10 | adjustable amgular momentum | M-166 | Two equal masses are mounted on a radial bar fixed to a horizontal axle with a pulley. |
| 1Q20.10 | angular acceleration machine | Disc 06-01 | A weight over a pulley turns a bar with adjustable weights. On screen timer and protractor helps measurements. |
| 1Q20.12 | adjustable angular momentum | 13-2.1 | Hang various weights from the axle of a large wheel and time the fall. |
| 1Q20.13 | adjustable angular momemtum | AJP 33(10),848 | A horizontal bar mounted at its midpoint on a turntable has pegs for mounting weights at various distances, and is accelerated by a string to falling mass. |
| 1Q20.14 | adjustable angular momentum | 11-2.3e | Spin the air bearing supported rotatable disc with a mass hanging on a string. |
| 1Q20.15 | flywheel and drum with wieght | PIRA 1000 | |
| 1Q20.17 | adjustable angular momentum | 12-4.7 | A falling weight on a string wrapped around a spindle spins a variety of objects to show Newton's second law for angular motion. |
| 1Q20.20 | angular acceleration wheel | PIRA 1000 | |
| 1Q20.20 | angular acceleration wheel | 1Q20.20 | Measure the acceleration of a bike wheel with a mass on a string wrapped around the axle. |
| 1Q20.20 | bike wheel angular acceleration | 12-4.6 | Measure the angular acceleration of a bike wheel due to the applied torque of a mass on a string wrapped around the axle. |
| 1Q20.20 | bike wheel angular acceleration | Disc 06-02 | Use a spring scale to apply a constant torque to a bike wheel and measure the angular acceleration. |
| 1Q20.25 | accelerate light and heavy pulleys | PIRA 1000 | |
| 1Q20.25 | accelerate light and heavy pulleys | 1Q20.25 | |
| 1Q20.26 | angular acceleration | M-15f.2 | Use strobe photography to record the motion of a large disc accelerated by a mass on a string over a pulley. |
| 1Q20.27 | rotating dry ice puck | 10-2.6 | A dropping mass on a string wrapped around a massive dry ice puck gives both linear and angular acceleration. |
| 1Q20.28 | rotational dynamics | 10-2.7 | A dry ice puck with strings wrapped around two different radii going to equal masses hanging on opposite end of the table is stationary while a piece of masking tape is placed over one winding. Remove the tape and the puck spins and translates. |
| 1Q20.30 | rolling spool | PIRA 500 | |
| 1Q20.30 | rolling spool | 1Q20.30 | A spool rolled down an incline on its axle and takes off when it reaches the bottom and rolls on its rim. |
| 1Q20.30 | rolling spool | TPT 10(4),210 | A large version of the rolling spool (16" dia.) is used as a lab. Construction hints and complete analysis. |
| 1Q20.30 | rolling spool | Mr-4 | A large spool is rolled down an incline on its small axle. When the outer discs reach the table, the thing takes off. |
| 1Q20.30 | rolling spool | M-165 | A spools rolls down a narrow incline on its axle. When it reaches the bottom, it rolls on the diameter of the outer discs. |
| 1Q20.30 | spool on incline | Disc 06-05 | A spool rolls down an incline on its central radius. |
| 1Q20.31 | rolling spool | 9-4.15 | Place the rolling spool demonstration on a low friction sheet to show conservation of linear momentum as the sheet moves backward when the roller hits bottom. |
| 1Q20.35 | bike wheel on incline | PIRA 1000 | |
| 1Q20.35 | bike wheel on incline | 1Q20.35 | A bike wheel rolls down an incline on its axle with the axle pinned to the wheel or free. |
| 1Q20.35 | bike wheel on incline | Disc 06-06 | A bike wheel rolls down an incline on its axle. The wheel can be pinned to the axle. |
| 1Q20.41 | rolling up an incline | 12-5.6 | A roller is timed as it rolls up an incline under the constant torque produced by a cord wrapped around over a pulley to a hanging mass. |
| 1Q20.42 | start a wheel | 17-3.2 | Use a large DC motor and a large wheel to show the angular acceleration of a rotating body with a constant driving torque. Picture. Diagram. |
| 1Q20.44 | rolling pendulum | AJP 47(4),367 | A spherical bob can roll on a track of the same arc as its swing when suspended by a cord. Comparison of the motion in the two cases shows the effect of the rotational motion in rolling. |
| 1Q20.46 | radius of gyration (Here?) | AJP 46(3),300 | Slide an air cart down an inclined instrumented air track, then add a wood track and roll a ball down the same incline. |
| 1Q20.47 | spin a swing | AJP 28(4),405 | Wind up two balls on strings from a common support with a slack connecting string between them. As they unwind, the angular velocity decreases until the connecting string becomes taut, then increases. Ref: AJP 27, 611 (1959) |
| 1Q20.50 | faster than "g" | PIRA 500 | |
| 1Q20.50 | faster than "g" | 1Q20.50 | A ball jumps from the end of a hinged stick into a cup as the stick rotates. |
| 1Q20.50 | faster then gravity | AJP 52(12),1142 | A ball at the end of a falling stick jumps into a cup. |
| 1Q20.50 | falling chimney | My-6 | A hinged incline with a ball on the end jumps into a cup a few inches down the board as the incline drops. |
| 1Q20.50 | falling chimney | M-206 | Diagram. Ball on the end of a falling stick jumps into a cup attached near the end of the stick. |
| 1Q20.50 | falling chimney | M-19k | A ball on the end of a pivoting stick jumps into a cup. Includes TPT 3(7),323. |
| 1Q20.50 | hinged stick and ball | Disc 06-11 | A ball at the end of a hinged stick falls into a cup mounted on the stick. |
| 1Q20.51 | bowling ball faster than "g" | PIRA 1000 | |
| 1Q20.51 | bowling ball faster than "g" | 1Q20.51 | A bowling ball at the end of ten foot ladder jumps into a five gallon pail. |
| 1Q20.52 | faster than "g" - add mass | AJP 41(8),1013 | Analysis of adding mass to the plank. |
| 1Q20.52 | falling chimney | TPT 20(2),100 | Use of a triangular board to increase R/I for the board. Analysis included. |
| 1Q20.52 | falling chimmey | TPT 13(7),435 | A mass can be added to the end of the bar to slow it down causing the ball to miss the cup. |
| 1Q20.53 | falling chimney | 9-2.5 | Hinged beam falls with paint brushes at and off the center of mass record the motion of the two points. |
| 1Q20.54 | "faster than g" revisited | AJP 56(8),736 | An analysis three cases, one in which the particle catches up with the rod. |
| 1Q20.54 | free fall paradox | TPT 3(7),323 | Short derivation of the "faster than g" demonstration. |
| 1Q20.55 | pennies on a meter stick | PIRA 1000 | |
| 1Q20.55 | pennies on a meter stick | 1Q20.55 | Line a meter stick with pennies and drop one end with the other hinged. Happens to fast to see well. Use with the video. |
| 1Q20.55 | pennies on a meter stick | Mw-2 | A meter stick is loaded with pennies and held horizontally, then released at one end. Pennies on the first 2/3 stay with the stick. |
| 1Q20.55 | penny drop stick | Disc 06-10 | A horizontal meter stick, hinged at one end, is loaded with pennies and released. |
| 1Q20.60 | falling meter sticks - scaling | PIRA 1000 | |
| 1Q20.60 | falling meter sticks - scaling | 1Q20.60 | Compare the rate of fall of one meter and two meter sticks. |