"Think"- I think we should build a crane-like pully system with a crank in the back where you can spin it and the elevator goes up and down between the 2 floors carrying the 3 blocks.
"Do"- We completely made a new pulley system than the one that we first made. We made a base that has 3 different pairs of pillars that are all different sizes. One pair is used for the pulley that lifts the box, the next pair is used for the pulley that holds and directs the string, and the last pair of pillars is used for the crank to wind up the string to lift the box.
"Test"- Our pulley system was a huge success. The crank works fineand the box lifts up with ease. One problem that we would maybe fix, but isn't a big thing, would be to find a way to make the crank a bit more stable, but it seems to be fine without it.
"Think"- Today we will make a video to put on to this Spark Page for proof that our pulley works and lifts up over 3 inches. We will use Spark Video to take a video of the pulley in action.
"Do"- We made the video proof that shows our pulley meets all critera and we are now set to start our next challenge.
"Think"- Today we will start making the very first design of our lever system. Once we do that we think we will make motifications to it so it can shoot objects over a foot. By doing that i think we will need to make the launching arm longer.
"Do"- We made the first design then we modified it by turning it upside down and adding an arm onto that was originally the lever base. It seems to work very well and launches very far. We didn't get the final design until 3 different designs were made. The first design launched the block too high and not out. The next one the arm kept breaking off every launch, and the last design we added strength to the arm so it didn't break off. That seemed to do the trick.
"Test"- Our 3rd design worked perfectly. It launched the block over a foot and it met all critera. This lever system was a big success!