Thermodynamics
> Entropy and the Second Law > Heat Cycles
DCS#
4F30.70
RUBBER BAND MOTOR
APPARATUS
wheel with rubber band spokes
202-11-A
375 W Photo-BFA heat lamp
101-16-C
lab jack
202-01-C
putty
202-02-A
DESCRIPTION
Shine heat lamp on rubber bands on
part of
wheel in front of reflector. Heated rubber bands will contract,
shifting
the center of mass of the wheel and causing it to turn. This
brings
new cooler rubber bands near the heat source and the cycle continues.
NOTES
Carefully balance the wheel by
sticking pieces
of putty on the rim.
