Algodoo

I wanted to try to make a combination lock. It doesn't work well, the gears grind, but it was worth it. Drag the sliders so that the combination number is the highest showing above the pink barrel, and press "return" and hold for a while to open. Be patient, though, because the gears grind a little and it takes a second or two for the box to actually open. Yes, this can be 'jimmied' in multiple ways, but it was a first try, you gotta give me credits for that