
®
L a r g e S t r u c t u r e s S e t
W in d m i l l
50
Windmill
The Windmill is another working model that can demonstrate how the kinetic energy of the wind can be converted
into other forms of energy, including gravitational potential energy. In this case, the windmill turns an axle that
winds up a cord attached to a hanging mass.
A template for the paper sails is included at the end of the instructions. Copy (or trace) the template and cut out the
sail from a sheet of 8.5 by 11 inch (21.5 by 28 cm) paper.
Figure: Windmill
#2
#3
ST
Legend:
AC = Angle Connector
CT = Cord Tensioning Clip
F4 = Flat 4 Member
FR = Full Round Connector
FT = Flat Round Connector
HR = Half Round Connector
SL = Sliding Connector
ST = Straight Connector
AC
AC
SL
CT
#6
HR
Mass hanger and
slotted mass
#5
#5
#6
#4
#3
#5
#4
#4
#4
3 X 4
#5
Cord
Slotted
masses
FT
Sail
Cord