Experiment Hm-05
Rubber Band Motor
Description: A
circular metal rim and a good bicycle axle are connected by rubber band spokes.
Rubber contracts on heating. The bottom rubber bands are heated with the lamp
so the center of gravity will shift away from the center of rotation. The heated,
shorter spokes move out of the first irradiated region and cool, as new spokes
move in. The continuous process results in rotation of the wheel.
The wheel (background) with two heat lamps (front)
Materials: wheel
with rubber bands, heat lamps, stand, power source
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Friday August 15, 2008 8:37 PM
