| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1Q60.00 | Rotational Stability | | |
| 1Q60.10 | bicycle wheel top | PIRA 200 | Extend the axle of a weighted bike wheel and terminate with a rubber ball. |
| 1Q60.10 | bike wheel top | 1Q60.10 | Extend the axle of a weighted bike wheel and terminate with a rubber ball. |
| 1Q60.15 | humming top | PIRA 1000 | |
| 1Q60.15 | humming top | 1Q60.15 | The standard toy top that you pump up. |
| 1Q60.15 | yo-yo top | TPT 22(1),36 | Description of an antique toy demonstrating various aspects of rigid body rotational motion. Several pictures should make it possible to duplicate the thing. |
| 1Q60.16 | old fashioned top | Mu-3 | An old fashioned top that you throw with a string. |
| 1Q60.18 | gyro gun | 13-5.9 | A shell is spun by hand before being fired by a gun. |
| 1Q60.25 | spinning coin | AJP 51(5),449 | An analysis of "wobbling", exhibited by common objects (coins, bottles, plates, etc) when they are spun on horizontal, flat surfaces. The apparatus maintains "wobbling" motion of a metal cylinder, which can be observed in slow motion by means of stroboscopic illumination. |
| 1Q60.30 | tippe top | PIRA 500 | |
| 1Q60.30 | tippe top | 1Q60.30 | The tippe top. |
| 1Q60.30 | tippe top | AJP 28(4),407 | A tippe top was spun on smoked glass. Photos show the path of the stem until flip and the soot marks on the top. |
| 1Q60.30 | tippe top | TPT 16(5),322 | A brief review of the history of the tippe top problem. |
| 1Q60.30 | tippe top | Mu-17 | The tippe top flips when spun. |
| 1Q60.30 | tippe top | 13-3.1 | Show that the tippe top spins in the opposite of the expected direction when inverted. |
| 1Q60.30 | tippy top | Disc 07-17 | The tippe top flips. |
| 1Q60.31 | tippe top analysis | AJP 45(1),12 | Physical arguments are presented which support the convention that the influence of sliding friction is the key to the understanding of the top's behavior. A rigorous analysis of the top's mechanics is offered, together with computer-generated solutions of the equations of motion. |
| 1Q60.35 | spinning football | PIRA 500 | |
| 1Q60.35 | spinning football | 1Q60.35 | Spin a football and it raises up on end. |
| 1Q60.35 | spinning football | AJP 40(9),1338 | Spin a football on its side. |
| 1Q60.35 | spinning football | Mu-18 | Spin a football and it rises onto its pointed end. |
| 1Q60.35 | spinning football | Mu-19 | An iron slug cut in the shape of a football is put on a magnetic stirrer. |
| 1Q60.35 | football spin | Disc 07-16 | Spin a football on its side and it will rise up on its end. |
| 1Q60.36 | spinning L'Eggs | TPT 15(3),188 | Instead of hard and soft boiled eggs, fill L'Eggs with water, paraffin, or air. Instructions and a little analysis are included. On a separate subject, a hint to use an egg instead of a ball in the floating ball demo. |
| 1Q60.36 | spinning egg | TPT 9(5),262 | Try the spinning egg demo with eggs boiled for different lengths of time. |
| 1Q60.36 | spinning eggs, etc. | M-202 | Positional stability of various shaped objects. |
| 1Q60.37 | billiard ball ellipsoid | PIRA 1000 | |
| 1Q60.37 | billiard ball ellipsoid | 1Q60.37 | Same as AJP 44(11),1080. |
| 1Q60.37 | billiard ball elipsoid | AJP 44(11),1080 | A billiard ball on an air bearing shows the spectacular motion of free rotating rigid and semirigid bodies moving near their inertial singularities. Or, the billiard ball on an air bearing acts goofy when you spin it in certain ways. |
| 1Q60.37 | billiard ball ellipsiod | Mu-12 | A billiard ball weighted with brass rods along orthogonal axes will show spin flip. |
| 1Q60.40 | tossing the book | PIRA 1000 | |
| 1Q60.40 | tossing the book | 1Q60.40 | Throw a book or board up in the air spinning it about its three principle axes. |
| 1Q60.40 | tossing the book | AJP 46(5),575 | Directions of constructing blocks of inhomogeneous mass distribution for use in demonstrating the intermediate-axis theorem. |
| 1Q60.40 | tossing the book, etc | TPT 17(9),599 | A simple method of measuring the moments of inertia about the three axes before tossing the book. Also has a simple straw and paperclip inertia wand. |
| 1Q60.40 | tossing the book | Mu-20 | A board of unequal dimensions is tossed and spins about various axes. |
| 1Q60.40 | tossing the book | 12-3.2 | Toss a 8x4x1 block into the air. |
| 1Q60.40 | stable and unstable axes of rotation | Disc 07-20 | Toss a rectangular board into the air. |
| 1Q60.45 | tossing the hammer | PIRA 1000 | |
| 1Q60.45 | tossing the hammer | 1Q60.45 | |
| 1Q60.46 | the hammer flip simplified | TPT 28(8),556 | An explanation of the hammer flip using only the concept of centrifugal force in a rotating reference frame. |
| 1Q60.50 | spinning lariat, hoop, and disc | PIRA 1000 | |
| 1Q60.50 | spinning lariet, etc. | Mu-21 | A rod, hoop, and flexible chain are attached to a hand drill. |
| 1Q60.50 | spinning lariet | M-168 | A hand drill held vertically is used to rotate loops of rope or chain. |
| 1Q60.50 | spinning lariet | M-16b.1 | A loop of flexible chain is attached to a hand drill. |
| 1Q60.51 | spinning rod and hoop | PIRA 1000 | |
| 1Q60.51 | spinning lariet, hoop, and disc | 1Q60.51 | A hoop and disc suspended from the edge are spun with a hand drill until they each stability. |
| 1Q60.51 | spinning rod and hoop of wire | Disc 07-19 | Spin a hoop and long rod with a drill. |
| 1Q60.52 | spinning lariet, bar | 12-3.4 | A bar is hung from one end by a string on a hand drill. When spun, the bar will rise. Also spin a loop of chain. |
| 1Q60.53 | spinning box | 12-3.1 | A rectangular box rotated from a chain around any of the three principle axes will rotate about the axis of maximum rotational inertia. |
| 1Q60.54 | rotating vertical chain | AJP 48(1),54 | The five stable patterns observed in a vertical rotating chain are used to introduce Bessel's function. |
| 1Q60.56 | spinning bifilar pendula | Mz-8 | A variable speed motor drives a horizontal rod in a horizontal plane with bifilar pendula of different lengths attached. |
| 1Q60.70 | orbital stability | AJP 30(8),561 | Identical masses slide out on a horizontally rotating crossarm both attached to the same central hanging mass. |
| 1Q60.71 | quadric restoring force | 8-7.1 | A leaf spring provides a quadratic restoring force to dumbbells rotating on a crossarm. Each angular velocity corresponds to only one stable orbit. |
| 1Q60.72 | rotational instability | AJP 58(1),80 | Different springs will result in conservation of angular momentum or instability in a spring loaded dumbbell. |
| 1Q60.73 | linear restoring force | 8-6.1 | Two dumbbells slide out as a crossarm rotates with a spring providing the restoring force. At the critical angular velocity the orbits are stable at any radius. |
| 1Q60.80 | static/dynamic balance | PIRA 1000 | |
| 1Q60.80 | static/dynamic balance | 1Q60.80 | Same as disc 07-15. |
| 1Q60.80 | static/dynamic balance | Disc 07-15 | A rotating system suspended by springs shows both the difference between static and dynamic balance. |
| 1Q60.81 | dynamic tire balancing | AJP 40(1),199 | Analysis of dynamically balanced wheels shows they must also be statically balanced. |
| 1Q60.90 | Marion's dumbell | AJP 42(2),100 | A simple apparatus to demonstrate the non-colinearity of the angular velocity vector and the angular momentum vector. Helps students increase their understanding of angular velocity, angular momentum, and the inertial tensor. Theory and construction details. |