| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1M40.00 | Conservation of Energy | | |
| 1M40.10 | nose basher | PIRA 200 | A bowling ball pendulum is held against the nose and allowed to swing out and back. |
| 1M40.10 | nose basher | 1M40.10 | Hold a bowling ball suspended from the ceiling against your nose and let it swing. |
| 1M40.10 | nose basher, etc | TPT 22(6),384 | Use bowling balls for the nose basher, drop out or project out of upper floor windows, collisions. |
| 1M40.10 | nose basher | Mr-6 | A large pendulum bob is suspended from the ceiling. Do the nose basher. |
| 1M40.10 | nose basher | 9-1.2 | Head against the blackboard, long pendulum. |
| 1M40.10 | nose basher | M-14b | Hold a bowling pendulum to the nose and let it go. |
| 1M40.10 | nose basher / bb pendulum | Disc 03-14 | A bowling ball pendulum is held against the nose and allowed to swing out and back. |
| 1M40.11 | recording pendulum motion | 9-1.7 | A complicated device uses a spark timer to record interchange of kinetic and potential energy in a swinging pendulum. |
| 1M40.12 | additional references | AJP 36(7),643 | A letter noting that AJP 35(11),1094 has been published many times. |
| 1M40.12 | weight of a pendulum | AJP 35(11),1094 | Suspend a pendulum from a double beam balance with a small block placed under the opposite pan to keep the system level. Swing the pendulum so it just lifts a weight off the stopped pan. |
| 1M40.12 | swinging on the halyards | M-17 | Swinging on the halyards to hoist a sail. |
| 1M40.12 | break a pendulum wire | M-146 | Suspend a heavy bob on a weak wire. As the ball descends in its swing, the wire breaks. |
| 1M40.13 | burn the pendulum wire | AJP 41(9),1100 | A Saran wrap pendulum support is burned to release the bob as it reaches the bottom of its swing. Measure the range of the bob. |
| 1M40.15 | stopped pendulum | PIRA 200 | A pendulum started at the height of a reference line reaches the same height when a stop is inserted. |
| 1M40.15 | stopped pendulum | 1M40.15 | A pendulum is started at the height of a reference line and returns to that height even when a stop is inserted. |
| 1M40.15 | stopped pendulum | Mr-3 | A pendulum swing is started at the height of a reference line. A stop is inserted and the bob still returns to the same height. |
| 1M40.15 | Galileo's pendulum | Disc 03-13 | Intercept the string of a pendulum by a post at the bottom of the swing. |
| 1M40.16 | blackboard stopped pendulum | M-132 | Do the stopped pendulum on the blackboard. |
| 1M40.20 | loop the loop | PIRA 200 | A ball rools down an incline and then around a vertical circle. |
| 1M40.20 | loop the loop | 1M40.20 | A ball rolls down an incline and around a loop. Vary the initial height of the ball. |
| 1M40.20 | loop the loop | AJP 30(5),336 | Apparatus Drawings Project No. 26: The vertical circle is made by flexing a thin stainless steel strip in a framework of plexiglass. |
| 1M40.20 | loop the loop | TPT 15(6),368 | How to make an inexpensive loop the loop from vinyl cove molding. |
| 1M40.20 | loop the loop | Mm-5 | A steel ball is rolled down an angle iron bent to form a incline and loop. |
| 1M40.20 | loop the loop | 12-5.7 | An apparatus to do the loop the loop quantitatively. Construction details in appendix, p.589. |
| 1M40.20 | loop the loop | M-157 | A ball rolls down an incline and then around a vertical circle. |
| 1M40.20 | loop the loop | M-16b.2 | Standard loop the loop. |
| 1M40.20 | loop the loop | Disc 06-09 | A rolling ball must be released at 2.7 times the radius of the loop. |
| 1M40.21 | water loop the loop | AJP 42(2),103 | A water stream "loop the loop" demonstrates the effect of centripetal forces much more dramatically then when a ball is used. |
| 1M40.23 | reverse loop the loop | PIRA 1000 | |
| 1M40.23 | reverse loop the loop | 1M40.23 | The reverse loop-the-loop is placed on a cart hooked to a falling mass that produces an acceleration just large enough to make the ball go around backwards into the cup. |
| 1M40.23 | reverse loop-the-loop | AJP 29(1),48 | With a little practice, one can pull a reverse loop-the-loop with a large and prolonged acceleration. Plans and procedures. |
| 1M40.23 | reverse loop the loop | 12-5.5 | In the reverse loop-the-loop a ball rolls up an incline and around a loop into a cup as the whole apparatus is accelerated. |
| 1M40.24 | loop the loop with slipping analysis | AJP 55(9),826 | Analysis of loop the loop, also dealing with slipping. |
| 1M40.25 | energy well track | PIRA 1000 | |
| 1M40.25 | energy well track | Disc 03-12 | A ball can escape the energy well when released from a point above the peak of the opposite side. |
| 1M40.30 | ball in a trough | PIRA 1000 | |
| 1M40.30 | ball in a track | 1M40.30 | A ball rolls in an angle iron bent into a "v" shape. |
| 1M40.30 | ball in a trough | 7-1.5.9 | Roller coaster car on a track runs down one track and up another of a different slope. |
| 1M40.31 | deformed air track | 9-1.6 | Deform a 5 m air track into a parabola (1") at center and show oscillations both with the track leveled and with one end raised. |
| 1M40.31 | air track potential well | 11-1.7 | Curve an air track into an arc of a vertical circle. |
| 1M40.32 | ball in curved tracks | M-14a | Balls are rolled down a series of curved tracks of the same height but different radii. |
| 1M40.33 | triple track | PIRA 1000 | |
| 1M40.33 | adjustable track | 1M40.33 | |
| 1M40.33 | ball in a track | Mr-2 | A large steel ball rolls on a bent angle track with differing slopes. |
| 1M40.33 | triple track energy conservation | Disc 03-15 | Balls released from three tracks with identical initial angles rise to the same height independent of the angle of the second side of the "v". |
| 1M40.35 | roller coaster | PIRA 1000 | |
| 1M40.35 | roller coaster | 1M40.35 | A ball rolls down a track with four horizontal sections of differing heights. The velocity is measured at each section. |
| 1M40.35 | roller coaster experiment | AJP 59(3),283 | Optoelectrical detectors measure the speed of a ball at specific points on a roller coaster track. Could be adapted for lecture demonstration. |
| 1M40.40 | ballistic pendulum with .22 | PIRA 500 | |
| 1M40.40 | ballistic pendulum | 1M40.40 | Shoot a .22 into a block of wood mounted as a pendulum. A slider device measures recoil. |
| 1M40.40 | ballistic pendulum | Mi-3 | A .22 is fired into a suspended wood block. The recoil distance is used to determine the rise of the block. |
| 1M40.40 | ballistic pendulum | 9-5.15 | Shoot a .22 straight up into a suspended block of wood. |
| 1M40.40 | ballistic pendulum | M-124 | The standard rifle ballistic pendulum setup. |
| 1M40.40 | ballistic pendulum | M-15a.3 | Fire a air-gun into a wood block with a paraffin center. |
| 1M40.41 | Beck ballistic pendulum | PIRA 1000 | |
| 1M40.41 | modify the ballistic pendulum | AJP 53(3),267 | Ignoring rotational dynamics results in a large error. Convert to a rotational dynamics device with an additional metal sleeve. |
| 1M40.41 | Beck ballistic pendulum | AJP 36(12),1161 | Comprehensive review of the Beck ballistic pendulum. |
| 1M40.41 | ballistic pendulum | M-13c | The commercial ballistic pendulum. |
| 1M40.41 | ballistic pendulum | Disc 05-11 | The commercial swinging arm ballistic pendulum. |
| 1M40.42 | ballistic pendulum | AJP 32(3),229 | A catapult/ballistic pendulum made of inexpensive materials. |
| 1M40.43 | bow and arrow ballistic pendulum | AJP 40(3),430 | The relation between bending of the bow and the velocity of the arrow was found to be linear. |
| 1M40.43 | bow and arrow ballistic pendulum | TPT 17(6),393 | Plans for a coffee can target for a bow and arrow ballistic pendulum. Includes slider. |
| 1M40.45 | blow gun ballistic pendulum | AJP 36(6),558 | Find the velocity of the dart fired from a blowgun by measuring the fall from the aiming point to the hit point on the target block. |
| 1M40.47 | vertical ballistic pendulum | AJP 31(9),719 | A ball is dropped into a box of sand suspended from a spring and the extension of the spring is measured. |
| 1M40.49 | trouble with the ballistic pendulum | AJP 38(4),532 | An analysis of the error introduced with non-parallel ropes. |
| 1M40.49 | ballistic pendulum tutorial | TPT 11(7),426 | Good tutorial on the ballistic pendulum. |
| 1M40.50 | big yo-yo | PIRA 500 | |
| 1M40.50 | big yo-yo | 1M40.50 | A large disc is hung from bifilar threads wrapped around a small axle. |
| 1M40.50 | big yo-yo | AJP 41(11),1295 | A shop drawing of axles with three different radii used to make a big yo-yo out of a force table. |
| 1M40.50 | big yo-yo | Ms-2 | A large (2') disc is suspended from a small axle so the string unwinds on the way down and rewinds on the way up. |
| 1M40.50 | big yo-yo | 12-5.2 | Two large discs hung from bifilar thread wrapped around a small axle. |
| 1M40.50 | big yo-yo | M-164 | A large yo-yo is made by suspending a large spool from two threads wrapped around opposite ends of the axle. |
| 1M40.50 | big yo-yo | M-19b.2 | A picture of a commercial Maxwell's wheel. |
| 1M40.50 | Maxwell's yoyo | Disc 06-08 | Release a large yo-yo and it will bottom out and wind up again. |
| 1M40.51 | cheap and simple yo-yos | TPT 28(2),92 | Yo-yos made with cardboard sides and paper towel centers routinely gave time of fall within 1% of predicted |
| 1M40.55 | swinging arm | 9-5.11 | A ball is dropped into a pivoting capturing arm from the height required to make it just complete one revolution. |
| 1M40.56 | spinner and pendulum | Mt-8 | A ball suspended as a bifilar pendulum hits a ball of equal mass free to rotate in a horizontal circle. |
| 1M40.57 | Pany device | 9-1.1 | A complicated apparatus converts elastic potential energy (spring) into rotational potential energy and back. |
| 1M40.60 | height of a ball | PIRA 500 | |
| 1M40.60 | height of a ball | 1M40.60 | Same as AJP 29(10),709. |
| 1M40.60 | height of a ball | AJP 29(10),709 | Rotate a 15.3 in radius bar at 1, 2, or 3 rev/sec, a mechanism releases a ball at the end of the bar at the moment the ball is traveling vertically. The ball rises 1, 4, or 9 ft. |
| 1M40.60 | height of a ball | 9-1.4 | A device to project a ball upward at different known velocities to show dependence of kinetic energy on the square of velocity. |
| 1M40.61 | 1-D trampoline | PIRA 1000 | |
| 1M40.61 | 1-D trampoline | 1M40.61 | A horizontal string passes over a pulley down to a spring fixed at one end. Place a spitball at the center of the horizontal section and pull it down until the spring extends unit lengths. Compare the heights the spitball reaches. |
| 1M40.63 | x-squared spring energy dependence | PIRA 1000 | |
| 1M40.63 | x-squared spring energy dependence | Disc 03-10 | Measure the height of recoil on an air cart glider on an incline after compressing a spring different to different lengths. |
| 1M40.64 | spring ping pong gun | PIRA 1000 | |
| 1M40.64 | spring pong gun | Disc 03-08 | A spring gun shoots standard and loaded ping pong ball to different heights. |
| 1M40.65 | height of a spring launched ball | PIRA 1000 | |
| 1M40.65 | height of a spring-launched ball | AJP 31(5),392 | A 3/4" steel ball is launched upward by a "stopped spring" (shown), from which the initial velocity is calculated. |
| 1M40.66 | mechanical jumping bean | PIRA 1000 | |
| 1M40.66 | mechanical jumping bean | 1M40.66 | Same as TPT 1(3),108. |
| 1M40.66 | mechanical jumping bean | TPT 1(3),108 | A mailing tube jumps when a hidden mass moves upward under rubber band power. |
| 1M40.66 | jumping tube | 9-3.3 | A spring loaded tube jumps two or three times its own height when triggered. Diagram. |
| 1M40.67 | spring jumper | PIRA 1000 | |
| 1M40.67 | spring jumper | Disc 03-09 | Compress a spring under a toy held down be a suction cup. |
| 1M40.68 | muzzle velocity - spring constant | AJP 53(11),1114 | A method of using the potential energy of the cocked spring to calculate the muzzle velocity. (15% of the energy is lost.) |
| 1M40.69 | rachet for inelastic collisions | AJP 28(7),679 | A ratchet mechanism locks a spring in the compressed position giving an inelastic collision with the decrease in kinetic energy stored for later release by tripping the ratchet. |
| 1M40.71 | dropping bar | 9-1.8 | Lift a horizontal bar suspended from two springs and drop it through a photocell to measure velocity. Examine the exchange between gravitational, elastic potential, and kinetic energy. |
| 1M40.72 | tension in wire when one mass swings | TPT 13(3),169 | A spring scale is suspended between two masses. Set one swinging- a lot of physics. |
| 1M40.74 | air track cart and falling mass | 11-1.12 | A mass m attached to a cart M with a string and pulley. Compare kinetic energy gained by m+M with potential energy lost by M. |
| 1M40.75 | obedient can | PIRA 1000 | |
| 1M40.76 | air disc | 11-2.3f | A falling weight spins an air bearing supported rotating disc. Compare rotational (disc) and translational (weight) kinetic energy with potential energy. |
| 1M40.80 | push-me-pull-you sternwheeler | AJP 53(10),962 | Both upstream and downstream motion is possible in a system with a water stream running between the rails and a waterwheel mounted on the rear axle of the cart. |
| 1M40.85 | sloping cart | 9-1.3 | This is a counter intuitive demo. Nothing happens when a brick is placed on a slanted cart. |
| 1M40.90 | rattleback | PIRA 1000 | |
| 1M40.90 | rattleback | 1M40.90 | |
| 1M40.91 | high bounce paradox | PIRA 1000 | |
| 1M40.91 | high bounce paradox | Disc 03-11 | Flip a half handball inside out and drop on the floor. It bounces back higher than the height from which it was dropped. |
| 1M40.93 | acrobat | Mp-10 | ????????????? |