Today we made a little progress. We figured out how to hold the bar back so when the ruler moves, the bar will swing and hit the ball down the tube. We are having trouble coming up with ideas of what else we can do for our machine. We don't have a lot of time left and I have a few ideas that I really want to try...... Right now we have a stack of cups on each side of the ball with a ruler across them. The bar on a string is held back behind the ruler, so when the ruler moves, the bar will swing and hit the balI...... really don't think the cups will work, though. They are not that sturdy and might not work multiple times.... I have an idea about what we can do, but I don't know if i will get the chance to try it.
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