This was a short project conducted in class over a three day period where each person was given the problem to design an object within a certain size and weight, 300 grams and 12" x 12" to roll as slow as possible down a ramp. The slowest times were awarded the highest grades and the fastest times the lowest grades. If your roller did not make it down the ramp you were awarded a zero. Unfortunately during the trial mine got stuck about halfway down the ramp. The ramp was 36" long and previously I had a trial run of 4.5 min. Below are some pictures of my design. My design constructed of two index cards with a trimmed paperclip glued between them acting as the rotating axis.