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The Danger Zone. April 23, 2008 EF 151 Final Group Project. Jessie “Juliet” Moore. Our Team & Our Project. Evan “Echo” Harb. Caleb “Charlie” Williams. Reuben “Romeo” Robertson. Conservation of Energy. KE + PE + W in = KE f + PE f + E loss PE = KE f. mgh = 1/2mv 2
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The Danger Zone April 23, 2008 EF 151 Final Group Project
Jessie “Juliet” Moore Our Team&Our Project Evan “Echo” Harb Caleb “Charlie” Williams Reuben “Romeo” Robertson
Conservation of Energy KE + PE + Win = KEf + PEf+ Eloss PE = KEf mgh = 1/2mv2 (.008)(9.81)(.085) = 1/2(.008)v2 V = 1.29 m/s
Projectile Motion y-yo = (x-xo)tanθ – (g/(2Vo2)(1+tan2θ)(x-xo)2 θ = 5.47
Conservation of Momentum M1 = Marble M2 = Rat Trap M1V1 + M2V2 = M1fV1f + M2fV2f M1V1 = M1fV1f V1 = V1f V1f = -1.28 m/s
Conclusion Friction was neglected on ramp and in funnel Coefficient of Restitution is ignored Marble hits the trap with 80% accuracy