Blake Hollis Jordan Livesay Kellen Catani Sean Yu D1 Team 3.

ROLLING DOWN ROCKY TOP

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 sawPower DrillJigsawHammer/NailsTape Measurer

Process Golf ball lies on top of a

board 0.2286 meters Trim piece connects to

the top and to the bottom with another board at a height of 0.0635m.

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 dominoesDominoes 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

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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