Electric Grinder, High Carbon Steel Rod.

 

Code Number: 1D55.20

Demo Title: Tangential Central Forces - Grinding Wheel & Sparks

Condition: Fair

Principle: Forces Due To Circular Motion

Area of Study: Mechanics

Equipment: 

Electric grinder, high carbon steel rod

Procedure:

Use protective goggles when using the grinder and steel.  The sparks will come off at a tangent to the rotating grinder wheel.

References:

  • Paul Gluck, "Rocket Propulsion with Sparklers", TPT, Vol. 44, #6, Sept. 2006, p. 336.
  • Donald F. Collins, "Centrifugal Icicles and an Inertial Paradox", TPT, Vol. 42, # 2, Feb. 2004, p. 79.
  • Mb- 31: Freier and Anderson, A Demonstration Handbook for Physics.
  • R. W. Pohl, Physical Principles of Mechanics and Acoustics, p. 42.
  • Julius Sumner Miller, Q193 & A193, Millergrams II – Some More Enchanting Questions for Enquiring Minds, p. 53 & 106.
1D55.20 - Tangential Central Forces - Grinding Wheel & Sparks