4B60.50: TRANSFORMATION OF MECHANICAL ENERGY INTO HEAT

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:

EQUIPMENT: Quarter-inch electric drill, 1/4" dowel rod, soft wood block.

SETUP TIME: 5 min.


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