Section B1TA:Betsy

The Green Machine

Wade FloydHannah KeslerJoshua Atkins

Lucas Hofmeister

Section B1TA:Betsy

The Team• Wade-Biomedical engineering major

from right down the road• Hannah-this is Hannah’s last day of

engineering…she says, “it was fun while it lasted!”

• Josh-Nuclear engineering major from JCTC

• Lucas-Biomedical engineering major from Nashville

Section B1TA:Betsy

Overview• Make Orange Green!• 99% recycled materials• Three main stages

– Gravitational potential to Kinetic– Gravitational potential to Kinetic– Spring potential to work

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Purpose

• Environmentally friendly method for pulling a party popper

• Bonuses:– Gets people excited about

environmentalism!– Gets the party started….

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Demonstration• Warning! This process results in a loud

noise…you might want to cover your ears

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Step 1

• Gravitational potential to kinetic energy• mgh = 0.5mv2

• Bolt sits at the top of pipe=>potential energy

• Slides down pipe=>converts to kinetic energy

• Does work on the head of the mallet

Section B1TA:Betsy

Step 2

• Gravitational potential energy to kinetic energy

• mgh = 0.5mv2

• Mallet at rest at the top of its rotation=>potential energy

• Mallet swings down=>converts to kinetic energy

• Razor blade cuts string

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Step 3

• Spring potential energy to Work• 0.5kx2=work done• Rubber bands are wrapped around

dowel axle=>Spring potential• String cutting releases axle=>rubber

band recoils and does work on the popper string

• POP!

Section B1TA:Betsy

Conclusions

• People clearly throw away useful items• Step by step analysis of stages

provides a simple physical explanation• Recycled materials were effectively

used to demonstrate different energy conversions