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Car Racing

Car Racing. Andrea Boyer, Paxton Jones, Eric Tabor, Chris Tippitt. The Group. Andrea Boyer – concept, journalist/editor, calculations Paxton Jones – concept, construction, supplier Eric Tabor – concept, construction, supplier Chris Tippitt – concept, construction, supplier.

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Car Racing

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  1. Car Racing Andrea Boyer, Paxton Jones, Eric Tabor, Chris Tippitt

  2. The Group • Andrea Boyer – concept, journalist/editor, calculations • Paxton Jones – concept, construction, supplier • Eric Tabor – concept, construction, supplier • Chris Tippitt – concept, construction, supplier

  3. Design Overview • Purpose: to start an electronic device • Materials used: tubing, wood, wire, ball bearing, popsicle sticks

  4. Calculations Velocity of the impact of the ball bearing: mgh = (1/2)mvf2 + (1/2)IW f2 mgh = (1/2)mvf2 + (1/2)((2/5)mr2) (v2/r2) gh = (1/2) vf2 + (1/5) v2 gh = (7/10) vf2 vf= [(10/7)(gh)] 1/2 vf= [(10/7)(32.2 ft/s2)(2.625in)] ½ vf= 30.1 ft/s2

  5. Calculations, cont. ∑T = I α r(F)(sin θ) = (1/3) mr2 α r(mg)(sin θ) = (1/3) mr2 α (g)(sin θ) = (1/3) r2 α α = [(3g)(sin θ)] / r = [(3)( 32.2 ft/s2)(sin(39.27))] / (15.5 in) α = 3.95 in/s2

  6. Issues • The ball bearing did not travel smoothly down the wooden ramp we originally planned to use • Setting up the plastic tubing in a way so that the ball bearing would travel • Determining what device we wanted to trigger

  7. Conclusion • Trial and error is crucial in creating a device such as this • Teamwork plays a major factor in projects • This project allowed us to put everything that we learned in 151 to use

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