PIRA

Demonstration Bibliography
MECHANICS
Motion in Two Dimension
DCS #DEMONSTRATIONREFERENCEABSTRACT
1D15.00Velocity, Position, and Acceleration
1D15.01showing accelerationref.see 1G20.75
1D15.10ultrasonic detector and studentsPIRA 200Have a student walk to and from a sonic ranger while observing plots of position, velocity, and acc.
1D15.10sonic ranger and students1D15.10Have a student walk toward and away from a sonic ranger while observing plots of position, velocity, and acceleration on a projection of the Mac.
1D15.12Hobbie film loop - AAPTPIRA 1000
1D15.12Hobbie films - AAPT1D15.12
1D15.15kick a moving ballPIRA 1000
1D15.15kick a moving ball1D15.15Kick a moving soccer ball on the floor or hit a moving croquet ball on the lecture bench with a mallet.
1D15.20high road low roadPIRA 500
1D15.20high road low road1D15.20Two balls race - one down a slight incline and the other down the same incline but including a valley.
1D15.20high road low roadAJP 51(1),132Two objects start at the same velocity, one moves straight to the finish, the other traverses a valley. The problem: which wins?
1D15.30catching the trainPIRA 1000
1D15.30catching the train1D15.30A ball accelerating down an incline catches and passes a ball moving at constant velocity on a horizontal track.
1D15.35passing the trainPIRA 1000
1D15.35passing the train1D15.35A ball accelerates down an incline with a stripped rope moving at constant velocity in the background. The moment the ball has the same velocity as the rope is strikingly obvious. Repeat with the rope at a different constant velocity.
1D15.36several ball and incline demosAJP 55(5),407This McDermott article contains several ball on incline races to help distinguish the concepts of position, velocity, acceleration.
1D15.40Galileo's circlePIRA 1000
1D15.40Galileo's circle1D15.40Several rods are mounted as cords of a large circle with one end of each rod top center. Beads released simultaneously at the top all reach the ends the rods at the same time.
1D15.40Galileo's circleM-89Small balls roll down guides that form chords of a large inclined circle. A single click marks simultaneous arrival.
1D15.40Galileo's circleM-88Beads are released simultaneously to slide along cords of a large circle.
1D15.41sliding weights on trianglePIRA 1000
1D15.41sliding weights on triangleDisc 02-09Lengths and angles of a wire frame triangle are chosen so that beads sliding down the wires traverse each side in the same time.
1D15.45brachistochrone track7-2.6Three tracks - straight line, parabola, and cycloid are mounted together. Triggers at each end control a timer. Details.
1D15.50brachistochronePIRA 1000
1D15.50brachistochrone1D15.50Each end of a track forms a brachistochrone. Balls released at any height on the brachistochrones reach the middle at the same time.
1D15.50brachistochroneM-93Two balls released on opposite sides of a cycloid always meet in the middle regardless of handicap. The ball on the cycloid always beats the ball on the incline.
1D15.51brachistochrone is a tautochroneAJP 53(6),519History of the brachistochrone as a tautochrone.
1D15.52brachistochroneTPT 28(8),537On constructing a large brachistochrone.
1D15.53cycloidal slide trackAJP 53(5),490Use the brachistochrone and tautochrone properties of a cycloid to make an actual slide track in amusement parks.
1D15.54brachistochroneAJP 50(12),1178Solution to the brachistochrone problem.
1D15.55triple trackPIRA 1000
1D15.55tripple track1D15.55Balls roll down an incline, brachistochrone, and parabola. The ball on the brachistochrone wins.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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