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.