Tyson Miller Marcus Jeter Issac Sharp Thomas Cook

 Bearing starts  Inclined planes  Rotational panel  Elastic collision with golf ball  Pulley  Lever  Falling weight  Banner is displayed

Conservation of Translational Energy -In the bearing, in the pulley and in the falling weight Conservation of Rotational Energy -In the rotating platform and banner holder Conservation of linear momentum -In the collision of the panel and the golf ball Torque -In the rotating platform and banner holder Center of Mass - In the balanced lever

C.O.E (in bearing): mgh = mgh + ½ mv^2 V (at bottom of planes) = 2.9 m/s Circular Motion: ½ mv^2 = ½ Iw^2 ½ m(b)v(b)^2 = ½ (½ mr^2)(v/r)^2 V (when hitting golf ball) = 1.26 m/s Wheel collision with Ball: m1v1+ m2v2 = m1v1’ + m2v2’ V2’ = 2.02 m/s Golf ball falling into cup: mgh = ½ mv^2 V = 1.66 m/s Rotating pulley: mgh + Win = ½ mv^2 V = 1.46 m/s Center of mass of lever: Center of Gravity = m Final weight falls: gh = ½ v^2 = 2.64 m/s = = Final Energy = 3.49 Joules

 Initially wanted to use a racecar track, but the idea was abandoned  Instead chose a ball bearing because it works better with the inclined planes  To stay within the budget we used makeshift materials  Needed a way to maintain the ball bearing, so we added a bottle cap.  Adjusted the height of the 3 rd plane to give the bearing more momentum.

 The Gnar Machine worked in 9 out of 10 trials, so the project was a success!  Calculating the energy of the machine shows how there are always numerous factors that are hard to determine.  The group learned how to work together with other people on a budget to meet a deadline.  Building a Rube Goldberg Machine requires much trial and error.