1L20.66 - Orbits on the Overhead/Mass Spectrometer Model

Place the Plexiglas plate with attached ring magnet on the overhead projector.
Roll one of the ball bearings at a grazing angle across the ring magnet.  Watch the ball bearing either be deflected to a different direction, or orbit the magnet.
Code Number:
1L20.66
Demo Title:
Orbits on the Overhead/Mass Spectrometer Model
Condition:
Excellent
Principle:
Orbits Around a Gravity Well
Area of Study:
Mechanics and Astronomy
Equipment:
Overhead plate with ball bearings.
Procedure:

See also 7D30.90 in Modern Physics and 1L20.66/7D30.90 in Astronomy.

Place the Plexiglas plate with attached ring magnet on the overhead projector.  Roll one of the ball bearings at a grazing angle across the ring magnet.  Watch the ball bearing either be deflected to a different direction, or orbit the magnet.

References:
  • Michel Gagnon, "A Mass Spectrometer Simulator in Your Computer", TPT, Vol. 50, # 9, Dec. 2012, p. 553.
  • Matthew Lowry, "Teaching Universal Gravitation with Vector Games", TPT, Vol. 46, # 9, December 2008, p. 519.
  • S - 190: "Atoms, Molecules and Solids", DICK and RAE Physics Demo Notebook.
  • David Kutliroff, "A Mass Spectrograph Analog", 101 Classroom Demonstrations and Experiments for Teaching Physics, p. 219.
  • Borislaw Bilash II, David Maiullo, "Model of Mass Spectrometer: A Demo A Day: A Year of Physics Demonstrations, p. 293.

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