EF 151

Rube-GoldbergRube-Goldberg

DeviceDevice

Team Porpoise Team Porpoise

Ryan HowellRyan HowellNicholas ThackerNicholas ThackerChristopher KmiecChristopher KmiecBenjamin YeagerBenjamin Yeager

PurposePurpose

Swat those pesky flies Swat those pesky flies via spring loaded fly via spring loaded fly swatter.swatter.

Demonstrate the Demonstrate the conservation of energyconservation of energy

Developing team workDeveloping team work

Step 1Step 1

Marble Marble rolls down rolls down PVCPVC

Losing PE Losing PE and and Gaining KEGaining KE

Step 2Step 2

Small marble Small marble collides with collides with large marble.large marble.

Conservation Conservation of of MomentumMomentum

Step 3Step 3

Large marble Large marble falls down falls down funnel and funnel and collides with collides with razor blade.razor blade.

Transferring Transferring kinetic energy kinetic energy from marble to from marble to razor bladerazor blade

Step 4Step 4

Blade cuts Blade cuts stringstring

String releases String releases springspring

Spring Spring potential potential energy energy transferred to transferred to fly swatter.fly swatter.

Step 5Step 5

Fly swatter Fly swatter gains gains kinetic kinetic energy and energy and squashes squashes fly.fly.

CCaallccuullaattiioonnss

CCaallccuullaattiioonnss

Materials and Materials and CostsCosts 10 pack razor blades 10 pack razor blades $01.46$01.46 Nail and band assortment Nail and band assortment $02.97$02.97 PVC PipePVC Pipe $01.92$01.92 WoodWood $01.00$01.00 SpringSpring $00.25$00.25 Fly Swatter (3 pack)Fly Swatter (3 pack) $00.99$00.99 GlueGlue $03.37$03.37 FunnelFunnel $00.97$00.97 MarblesMarbles $00.50$00.50 Sticks of WoodSticks of Wood $01.00$01.00 ThreadThread $00.25$00.25 TotalTotal $14.68$14.68

ConclusionsConclusions

Device was Device was successful.successful.

Conservation of Conservation of energy was energy was shownshown

Fly vanquishedFly vanquished Gained problem Gained problem

solving skillssolving skills