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Device Overview

Device Overview. Project Jag is a Rube-Goldberg device which utilizes gravity to perform the task of turning on a light bulb. Energy Conversions Overview. The jaguar (not mini cooper) rolls down the incline The elevated tennis ball swings to knock over the box

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Device Overview

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  1. Device Overview • Project Jag is a Rube-Goldberg device which utilizes gravity to perform the task of turning on a light bulb.

  2. Energy Conversions Overview • The jaguar (not mini cooper) rolls down the incline • The elevated tennis ball swings to knock over the box • The battery falls through a funnel and hits the metal box which turns on the light bulb

  3. Assumptions • Friction neglected • Velocity of battery falling through funnel is zero at point right before stem • Air resistance neglected

  4. Energy Equation 1 mgh=0.5mv^2 Masses cancel gh=0.5v^2 (32.2ft/s^2)(0.21ft)=0.5(v^2) v=3.7ft/s Energy Equation 2 mgh=0.5mv^2 Masses cancel gh=0.5v^2 (32.2ft/s^2)(0.5ft)=0.5(v^2) v=5.7ft/s Calculations

  5. Calculations • Energy Equation 3 *Note, velocity will vary with height of table. Given formula is with height of test table. • mgh=0.5mv^2 • Masses cancel • gh=0.5v^2 • (32.2)(2.2ft)=0.5(v^2) • v=11.9ft/s

  6. Demonstration

  7. Problems • Making sure we had all supplies we needed • Figuring out a way to make the battery consistently fall into funnel • Finding an object small enough to fit through a funnel but heavy enough to flip a switch

  8. Conclusion • Rube-Goldberg devices are complicated ways of doing simple tasks but good real life examples of physics at work • Jaguars and mouse traps don’t mix

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