Flower Power By Chase Thompson, Stephanie Miller, & Josh

Chandler

Materials

300 ft of 30 gauge copper wire

Brass Bar 6 rare earth

magnets fan blade Pin wheel Sheet of wood Paint

How Does It Work? Mechanical Aspects Propeller initiated by wind spins turning brass

shaft Magnets attached to the shaft are turned in

sequenceElectrical Aspects Magnets rotate perpendicular to copper wirecreating an electrical current Current flows from the wire to the flower attachment illuminating the lightbulb

Equations Used Theoretical

KE =

PTheoretical = KE/t Ptheoretical= 13.506 watts.

Actual P = IV P= (25)*(.6) = 15 watts

Efficiency [(Actual - Theoretical)/Theoretical] *

100

V = IR (Ohms Law)

A = Area L = Length p = Density of Air V = Voltage P = Power(watts) I = Current(Amps) v = wind velocity T = time R=Resistance

p=1.204kg/m3

A= * (.127m)2= .0314m2 =.05067m2

V=8.94 m/s

Issues

Original idea using gears did not work Additional amount of copper wire was needed Initial propeller used was not strong enough Coiling and mounting the copper wire Strength of magnets needed to be increased Maintaining alignment of the brass bar

Conclusion Gained experience in converting mechanical

energy into electrical energy Applied principles of physics in a real life

situation Learned to work as a team Improved planning and time management skills