Blake Hollis Jordan Livesay Kellen Catani Sean Yu D1 Team 3

Basics  What is it? Rube Goldberg device ○ One input force = one task ○ Inefficient and complicated  Bill of Materials  Concepts used  Torque/ Rotational Motion  Spring Force  Potential/Kinetic Energy  Translational Energy

Building Process  Tools used Circular saw Power Drill Jigsaw Hammer/Nails Tape Measurer

Process  Golf ball lies on top of a board meters  Trim piece connects to the top and to the bottom with another board at a height of m.  The golf ball will roll to the bottom of the trim piece with a velocity of 2.18m/sec. and strike a shaft (0.0635m) Shaft speed = 34.3 rad/sec  Second ball will hit a block Block speed = 1.01m/s

Process (Cont.)  Block falls over and starts dominoes Dominoes speed =.54 m/s  Dominoes trigger mousetrap  Mousetrap releases paperclip which allows banner to unfurl.

Calculations / Issues  Issues Absence of friction or losses of energy Input force varies each time as well as direction of force Ramps not sturdy ○ Nailed ramp Paperclip did not release ○ Changed angle of pull

Summary  After issues were solved, device worked fairly efficiently  Fun creative use of common objects  Some issues could not be resolved but we found ways around them