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Code Number: 3A20.35
Demo Title: Air Cart Masses and Springs - Air Track & 2 Springs
Condition: Good
Principle: Velocity in an Oscillating System
Area of Study: Oscillations & Acoustics
Equipment:
Air track, Spark car for air track, Matched springs (2) (for air track), , Single pulley for air track, Plexiglas Spring Attachment, Masking tape, Masses (3) (50 g, 100 g, 150 g), Timing gates and counters, Large Hoop Springs, Spark generator, Spark tape.
Procedure:
Attach the Plexiglas bar across the air track at the midpoint. If using the spark generator be sure that there is nothing to cause a short circuit. Attach the sparking pins to the desired car. Set the car into the track, position a length of tape under the sparking pin and tape to the railing with masking tape. Practice will be necessary. It is advisable to use the timing gates and counters for this demonstration if measurements are desired.
References:
- Sándor Egri and Lóránt Szabó, "Analyzing Oscillations of a Rolling Cart Using Smartphones and Tablets", TPT, Vol. 53, #3, Mar. 2015, p. 162.
- Christopher A. Brueningsen, "Investigating Magnetic Oscillations", TPT, Vol. 31, #3, Mar. 1993, p. 184.
- Alan Cromer, "The x3 Oscillator", TPT, Vol. 30, #4, Apr. 1992, p. 249.
- John L. Kroening, "Question About x3 Oscillator", TPT, Vol. 30, #6, Sept. 1992, p. 326.
- Alan Cromer, "Response to Kroening", TPT, Vol. 30, #6, Sept. 1992, p. 326.
- George Matous and John Matolyak, "Teaching Important Procedures with Simple Experiments", TPT, Vol. 29, #8, Nov. 1991, p. 541.
- Thomas B. Greenslade, Jr., "Damped Simple Harmonic Motion on a Linear Air Track", TPT, Vol. 7, #7, Oct. 1969, p. 395.
- Laurence E. Dodd, "Energy Independent of Mass in Simple Harmonic Motion", AJP, Vol. 19, #3, Mar. 1951, p. 189.
- David Kutliroff, "69, Simple Harmonic Motion Is Displayed and Analyzed with a Cart, Springs and an Accelerometer", 101 Classroom Demonstrations and Experiment For Teaching Physics, p. 152.
- Sa-13: Freier and Anderson, A Demonstration Handbook for Physics.