Day 3 Group 13

A: We needed to turn the bottle upside down to allow the water to flow naturally instead of have the water held up by suction with the cork being yanked from the top like originally planned. We needed to switch out the hoses and we readjusted out pulley system to be more efficient and have more support. We removed excess string and zip tie ends and did some more general clean up on the project to make it look more neat.

B: Our main challenge was that we are not completing each component at the pace we would have liked to and are falling behind a little bit. We still do not know what we will do for our electrical component but we plan on having it most of the way completed by the end of this weekend. Our original mousetrap was not strong enough to yank out the cork so we turned the bottle upside down, reduced the amount of pulleys and installed a bigger mousetrap.

C: The main concept our machine uses is gravity. It is what allows each marble to move along the circuit and set of each event that leads to the next. The water flows into the can using gravity, the can pulls out the other lever with gravity, and the second marble runs down the side of the project along tracks using gravity. Another concept is momentum, as with the typical Rube Goldberg machine, ours is centered around each marble being able to move along the track and use its energy to keep the chain reaction going. It has to keep its momentum going to reach the first mousetrap and activate it. That energy had to keep moving to allow each change of potential to kinetic energy in the other machines.