Overview of Design
•Wood
platform and
towers.
•Spiral tube using gravity.
•PVC tube.
•Newton’s Cradle
•Stick with a needle.
•Balloon with weight inside
•Mouse Trap
•Bottle Opener that plays
“Rocky Top”
•Costs:
•Bottle
opener: $10
•Needles: $4
•Everything Else: FREE
1. PVC Pipe Spinning down
Spiral
2. Steel ball rolling down
slope
3. Ball starting a Newton’s
Cradle
4. Stick with needle on end
falling onto balloon
1
5
2
3
6&7 4
5. Balloon popping, releasing
pellets.
6. Pellets springing a mouse
trap
7. Mouse trap connects batteries to
speaker, beginning “Rocky Top”
Hollow Cylinder
(Angular Momentum)
L=Iω
Stick Balancing (Center
of Mass)
R = m1r1 + m2r2…
m1 + m2…
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
Ball Rolling down pipe
ramp (COE)
mgh=(1/2)mv² + (1/2)Iω²
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
Newton’s Cradle
(Collision/Linear
momentum)
m1v1 + m2v2 = m1v1’ +
m2v2’

Trap Springing
(Torque/Rotational
Energy)
τ = F•r•sin(θ)




Spiral would not cooperate, had to make many
different types.
Stick would not pop balloons with nails, had to go
buy actual needles.
Could not find a suitable electronic device for the
trap to set off.
Once we got the piece we could not get the metal
pieces to connect correctly



We visually learned the applications from our
lectures from the past four modules
We learned that time management is a key to a
successful group project.
It was a fun, but intellectually tiring project.