Transcript P
EF 151 Roller Coaster Project
Team: Go Vols
Josh Ferguson
Erick Foster
John Collins
John Hungerford
Preliminary Design
• Simple design so it would
be easy to build
• Long coil to eat up time
• Small ramp at the end
• Funnel to catch the
rolling ball
• Tail at the end of the
funnel to eat up more
time
Problems Encountered
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Support for tubing
Tube kinking up and squishing closed
Tube bending and swaying
Particles and PVC pipe debris getting in
tube
• Too short of a run
Final Design
Materials
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PVC pipe
Clear plastic tubing
Wire hangers
Scrap wood
Nails and screws
Soda can
Metal bearing
Hot glue
Lots and Lots of Duct Tape!!!!
Calculations
• By using the Conservation of Energy equation, we were
able to calculate the ball’s theoretical speed at the bottom
of the ramp.
• ----------------------------13.3 ft./sec.--------------------------• By using the trajectory equation and a few experimental
runs, we were able to determine the actual velocity.
• ----------------------------5.58 ft./sec.--------------------------• Finally, by using the Conservation of Energy equation
again, we could determine the energy lost during the run.
• ----------------------------.0301 ft.-lbs.--------------------------
Conclusion
• Our design seemed simple enough, however,
when actually building the coaster, we ran into
many problems and delays.
• The actual building process took much longer
than expected because of these problems; we
spent approximately 12 hours.
• This project was kind of fun, and it allowed our
group to use the lessons learned in EF 151 in real
life physical applications.