4B60.55 - Frictional Heating

See paragraph one in the procedure section
See paragraph two in the procedure section
Code Number:
Demo Title:
Frictional Heating
Area of Study:
Electricity & Magnetism
2 X 4, pointed dowels, and 3/8" drill.

Chuck one of the pointed dowels into the drill.  Press into the indentation on the 2 X 4 and start the drill.  Smoke should start to appear within 5 seconds.  If no appreciable smoke appears by then press harder with the drill.

Put a large dull bit into the drill press.  Start drilling into the 2 inch thick piece of iron.  Drill for a few seconds, back off, and immediately fill the drill hole with water.  The water should boil and create appreciable amounts of steam.

  • Gorazk Planinsic, Eugenia Etkina, "Boiling Water by Doing Work", TPT, Vol. 59, #6, Sept. 2021, p. 508.
  • George M. Hopkins, "The Conductivity of Metals", Experimental Science, p. 194.

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