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I have ("had", I should say) 18 tasks, and we got first at states. Our device was 40 x 50 x 50.5, and we received full points except for the fact that a ball flew out (-50 pt) and the time waster accidentally went about 42 seconds over the target time.

Unfortunately, our school got second at ...

Correct me if I'm mistaken, but I'm pretty sure the cartoon shows a pulley with IMA=1. To get IMA>1, you need to incorporate a movable pulley.

What torqueburner says is right, but I would maybe suggest submitting a clarification for your state. My school is in Virginia, and someone asked a similar question. Our clarifications say that:

(Rule 4d) If a screw (or a wheel and axle) triggers the next task before achieving one full rotation but ...

The link is to the national FAQs of the national Science Olympiad website. It is official, although if you want to be absolutely sure, you should submit a clarification for your state.

As for your invitational dilemma, I would suggest showing the website to the event supervisor at the next ...

All of these questions are answered here: https://www.soinc.org/node/265
It also answers your question on the "order of tasks" thread
hope this helped!