PURPOSE: To demonstrate transformation of mechanical energy into heat.
DESCRIPTION: Use an electric drill to spin a wooden dowel rod in a hole on a large wooden beam. Shortly the contact point begins to smoke, indicating generation of heat due to friction.
SUGGESTIONS: Teach this to a Boy Scout.
REFERENCES: (PIRA 4B60.50)
EQUIPMENT: Quarter-inch electric drill, 1/4" dowel rod, soft wood block.
SETUP TIME: None.
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