ROLLING DOWN ROCKY TOP
Blake HollisJordan Livesay
Kellen CataniSean 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
22
'212211
'22
'112211
2
2/12/1
)(
/2/1
mvI
vmmvmvm
vmvmvmvm
rvmvmgh
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
