The propeller is wound by
a battery operated winder. Click to see a
120kb movie.
The rubber band is wound
until the batteries go flat.
Indicate
using the slider on the right the amount (in percent) of chemical
potential energy in the batteries that is converted to elastic
potential energy. Assume no energy loss.
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Indicate
using the slider on the left the amount of chemical potential
energy present in the batteries.
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