1Q60.30 - Tippy Top

Code Number:
Demo Title:
Tippy Top
Conservation of Angular, Momentum about Vertical Axis
Area of Study:
Tippy - Top.

The Tippy - Top, old fashion top, and the football will all act in the same manner. When spun the frictional torques will cause all of them to rotate about their statically unstable axis.

  • Kenneth Brecher and Rod Cross, "Physics of the PhiTOP®", TPT, Vol. 57, #2, Feb. 2019, p. 74.
  • Rod Cross, "Spherical Tippe Tops", TPT, Vol. 51, #3, Mar. 2013, p. 144. 
  • George Barnes, "Tippy Top Thoughts", TPT, Vol. 25, #4, Apr. 1987, p. 200.
  • Ralph Baierlein, "Spinning Footballs and Class Rings", TPT, Vol. 24, #6, Sept. 1986, p. 361.
  • Brother James Mahoney and Kenneth W. Ford, "Why Does a Finger Ring Flip?", TPT, Vol. 16, #5, May 1978, p. 322.
  • D. Rae Carpenter Jr., "L'Eggs Demonstrations", TPT, Vol. 15, #3, Mar. 1977, p. 188.
  • George D. Freier, "The Tippy-Top", TPT, Vol. 5, #1, Jan. 1967, p. 36.
  • Harry Soodak, "A Geometric Theory of Rapidly Spinning Tops, Tippe Tops, and Footballs", AJP, Vol. 70, #8, Aug. 2002, p. 815.
  • C. G. Gray, B. G. Nickel, "Constants of Motion for Nonslipping Tippe Tops and Other Tops with Round Pegs", AJP, Vol. 68, #9, Sept. 2000, p. 821.
  • Richard J. Cohen, "The Tippe Top Revisited", AJP, Vol. 45, #1, Jan. 1977, p. 12.
  • Mu-17, Freier and Anderson, A Demonstration Handbook for Physics.
  • M-788, "Stability of Spinning Objects", DICK and RAE Physics Demo Notebook.
  • Harry F. Meiners, 13-3, Physics Demonstration Experiments, Vol. I,  p. 297.
  • Jearl Walker, "The Physics of Spinning Tops, Including Some Far-Out Ones", The Amateur Scientist, March, 1981.
  • Jearl Walker, "2.73, Tippy Tops", The Flying Circus of Physics with Answers.
  • Jearl Walker, "1.106, Tippy Tops", The Flying Circus of Physics Ed. 2, p. 53.
  • Christopher P. Jargodzki and Franklin Potter, "225, The Tippe Top", Mad About Physics, p. 89, 226.
  • Robert Ehrlich, "12.5 - Tippy Tops and Spinning Electrons", Why Toast Lands Jelly-Side Down, p. 183.

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