compound machines
define a problem
the purpose of the machine is to apply a effort force and have marbles poured into another cup.
generate concepts
develop a solution
construct and test prototype
evaluate solution
our second simple machine is the pulley. we used the pulley to change the direction of the force to lift the end of the lever opposite to the marbles lowering the cup, thus pouring the marbles. My first vex lab experience was great one learned what parts can be used in what ways. When we first tested our compound machine it worked great, all the marbles poured from the stationary cup we had on our machine to the cup in which one of our group members was holding. One mistake that didn't affect our group greatly but was evident was that sometimes the members in our group weren't all on the same page. Another is that we had trouble deciding on how we should build our machine and other things, but that was solved by a vote.
present solution
stage 1 stage 2 stage 3
conclusion
the easiest mechanism was the levers to figure out the mechanical advantage. If I could make modifications, I would make the place where the cup is more stable for the cup so it isn't as loose. Lastly, I'd find a way to put the cup that holds the marbles on the lever without the C part we have holding it.