Water-Logged

Designed and constructed by: Nick Dement, Eric White, and Jake

Shelton

Team Introduction

Team D2-8• Nick Dement

• Jake Shelton

• Eric White

Device Design Overview

• Materials:– Pvc Pipe– Wooden Boards– Dowel Rods– Cups– String– Rubber Bands– Swinging Weight– Nails/Screws– Duct Tape

Device Operation

• Projectile Motion- Marble & Ramp• C.O.E. (Rotational)- Marble• C.O.ρ. (Linear)- Collisions

• C.O.ρ. (Angular)- Weight• Center of Mass- Balances

Device Operation Cont.Calculations

Marble Speed at Launch: mgh=½mv²+½Iω²h=.416 ft ω=(v/r) I = ⅖ m(r)² g=32.2 ft⁄s²m(32.2)(.416)= ½mv²+½(⅖m(r)²)(v²⁄r²)(32.2)(.416)= ½v²+½(⅖(r)²)(v²⁄r²)(32.2)(.416)= ½v²+½(⅖)v²V=4.378 ft⁄s

Weight Angular Speed at Impact: mgh=½mv²+½Iω²

h=.5417 ft I=mr² v=ωr r=.7917 ft m(32.2)(.5417)=½m(ωr)²+½(m(r)²) ω²(32.2)(.5417)= ½(ωr)²+½(r)²ω²(32.2)(.5417)= ½(ω)²(.7917)² +½(.7917)²ω²ω=5.275 rad⁄s

Device/Construction Issues

• Problems with:– Maintaining stability– Making device

repeatable– Getting precisely

sized objects to operate machine adequately

• “If at first you don’t succeed, try, try again.”-Thomas Palmer

Conclusions

• Eventually, our team created a successful device.

• The device is repeatable for completing its job, but inefficient and complicated in doing so.

• Through trial and error, as well as some calculations, our team produced a working machine and completed the project.