Group 3

1. Group 3 Aka Rube GoldBEST

2. The Team Collin Zimmerman Nick Humensky Jeremy Moody Zack Barber • Enjoys a good frolic • Enjoys sunset walks on the beach • One day wishes to be • as cool as he dresses • Loves to dance • Afraid of bats and peanut butter • Aspires to some day • join the olympic synchronized • swimming team • Plays as Kirby in • Super Smash Bro’s • His life be like • ooooahhhhoooooooahh • Probably wants some ice cream • right now • Can bench Collin, Nick, • and Zack with one hand • If he could be any animal, • would be a kangaroo • World class cartwheeler

3. The Design • First, a marble rolls into • a solid ball, rolling into • a funnel • Next, the marble rolls • down the tube and hits • a wooden piece that • transfers its energy to a • second marble. • The second marble rolls • down the remainder of the • pipe until it knocks a platform • off balance releasing a marble • in the Newtons Cradle • Finally, the Newtons Cradle • knocks a wooden plank into • the banner, releasing it for all • to see

4. Calculations Rotational Energy m=mass of the marble g=acceleration due to gravity h1=height from drop to ball k=mass moment of inertia for ball and marble ω=angular velocity of the tip of ball mgh = (1/2)kω^2 Translational Energy m1=mass of the marble m2=mass of the wood v1=velocity of the marble v2=velocity of the wood Marble one Wood Piece Marble two (1/2)(m1)(v1)^2 = (1/2)(m2)(v2)^2 = (1/2)(m1)(v1)^2 Torque τ=torque of platform F=perpendicular force of the marble d=distance from center of mass τ=Fd

5. Calculations Continued… Center of mass m1=mass of marble m2=mass of the platform r2=distance from left to com of platform r1=distance of marble from far left side of platform (m1)(r1) + (m2)(r2) m1 + m2 Conservation of Linear Momentum m1=mass of ball g=acceleration due to gravity v1=linear velocity of ball h=height of ball held above center of Newton Cradle m2=mass of last ball v2=velocity of last ball m1gh = (1/2)m1v1^2 m1v1 = m2v2

6. The Construction • The design and construction came in 3 steps: 1. Come up with a design 2. Completely redo that design 3. Build the new design with random items found in the workshop • Originally we had a projectile motion section, along with a series of dominoes, but those • Ideas were quickly removed. The large ball for the marble to rotate into along with the • center of mass platform were added in the place of these two concepts. • Some of the items used for the design that were not initially in the blueprints were: -The handle of a vacuum -The stick of a broom -A set of mini bowling pins

7. In Conclusion… We dropped the flag