1D40.35 - Binary System

You can balance the system on your finger.  The balance point is marked by the orange tape on the rod. Throw the system into the air with some rotational motion.  You should see the system rotate about it's center of mass ( again the point marked by the orange tape ).
Code Number:
1D40.35
Demo Title:
Binary System
Condition:
Good
Principle:
Center of Mass
Area of Study:
Mechanics
Equipment:
Binary system with large light weight ball and small heavy ball.
Procedure:

You can balance the system on your finger.  The balance point is marked by the orange tape on the rod. Throw the system into the air with some rotational motion.  You should see the system rotate about it's center of mass ( again the point marked by the orange tape ).

References:
  • Charles A. Eckroth, "Earth and Moon Motions Around Their Common Center of Mass", TPT, Vol. 28, # 6, p. 425, September 1990.
  • Mp-7, 8: Freier and Anderson,  A Demonstration Handbook for Physics
  • 13 - 14, Janice Vancleave's 201 Awesome, Magical, Bizarre, & Incredible Experiments.
  • Deborah Jean Warner,  Pike's Illustrated Catalogue of Scientific & Medical Instruments, p. 171, 1984.

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