Josh Alfrey Andrea Boyer Philip Cutler Don Hendrick The Group Josh Alfrey concept designer construction Andrea Boyer concept journalisteditor Philip Cutler concept calculations ID: 597823
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Slide1
The Mouse Trap
Josh
Alfrey, Andrea Boyer, Philip Cutler, Don HendrickSlide2
The Group
Josh
Alfrey – concept, designer, constructionAndrea Boyer – concept, journalist/editorPhilip Cutler
– concept, calculations
Don
Hendrick
–concept, designer, supplier, calculationsSlide3
Device Design
Purpose: to display a Tennessee banner.
Materials used: wood, marbles, PVC pipes, funnel, mouse trapsSlide4
Calculations
mgh
= (1/2)mvf2 + (1/2)IW f2mgh = (1/2)mv
f
2
+ (1/2)((2/5)mr
2) (v2
/r
2
)
gh
= (1/2) v
f
2
+ (1/5) v
2gh = (7/10) vf2vf = [(10/7)(gh)] 1/2vf = [(10/7)(32.2 ft/s2)(3.5 in)] ½vf = 12.69 inchesSlide5
Calculations, cont.
∑T = I α
r(F)(sin θ) = (1/3) mr2 αr(mg)(sin θ) = (1/3) mr2 α(g)(sin θ) = (1/3) r
2
α
α = [(3g)(sin θ)] / r = [(3)( 32.2 ft/s
2)(sin(39.27))] / (15.5 in)α = 3.95 in/s
2Slide6
Issues
The string attached to the first mouse trap was too weak
Determining what device would be able to hold up the bannerThe marble would fall out of the PVC pipes, so we needed to put a cap on the endMaking a way for the marble to hit the mouse trap when it fell out of the PVC pipesSlide7
Conclusion
Trial and error is crucial in creating a device such as this
Teamwork plays a major factor in projectsThis project allowed us to put everything that we learned in 151 to use