Will McAlexander
Jimmy Erickson
Chris Epley
Will
Jimmy
Chris
The box that was the frame for the
system is approximately a cube with
each side being ~16.5 in (.42 m). The
plastic tube that makes up most of the
track is approximately 20 feet long.
The starting position of the ball is roughly .5 meters
Therefore, by the equation for gravitational
potential energy : PEgrav = mgh
m=~.25 gram g= 9.81 m/s^2 h =~.5 meters
So: PEgrav = .25 x 9.81 x .5 = 1.23 Joules
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The biggest problem by far was crinkles in the
tubing
Next was an unstable box
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We rebuilt the box from scratch since the original
one was so unstable
The conflicting times that the team members
were available was another big problem.

While everything looked easy on paper, the
actual building process was impeded by a
variety of things.
Personal Skill
 Quality/Availability of Materials, Tools, and Time
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In the end, even the most simplistic of designs
turn out to have a lot of hidden errors and
problems.