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Well you get scored on:
Starting task
Ending task
(special task if you wish to include it)
plus 8 more.

So in max you can get 11 tasks scored, but without the special, you can get 10.

I think it would be rather simple to make gears with wood and hot glue. I built my paddlewheel in this way last year, and it worked rather well.

I am wondering, how do you find the IMA of a lever system. I scoured GOOGLE, but nothing camje up with a definate answer. I know how to find it in general, but I have no clue on how it applies to lever systems.

XXiggy_gimXX wrote:I am wondering, how do you find the IMA of a lever system. I scoured GOOGLE, but nothing camje up with a definate answer. I know how to find it in general, but I have no clue on how it applies to lever systems.

Wikipedia can help you: http://en.wikipedia.org/wiki/Compound_lever

Think of if like a composition of functions- If one lever's mechanical advantage is given by f(x) = 6x, and the other lever in the system (whose input arm is acted upon by the last lever's output arm) has mechanical advantage given by g(x) = 2x, the total is f(g(x)) or 12x. X being the input force on the first lever.

Caveat- the "input arm" and "output arm" are not necessarily on different arms, they'll be on the same arm / side of the fulcrum if they're part of a 2nd or 3rd class lever. They'd just be different "input areas" on the levers.

Correct me if I'm wrong anyone (chalker).

For making your own wooden gears check out the following link. It has a template generator where you can print out any size gear you want on paper which can be transferred to wood. Also shows how to do it.

http://woodgears.ca/gear/howto.html

what constitutes a homemade? because I just molded a K'Nex gear with clay and then pour melted plastic into the mold, would that count as "homemade", cause I made it?

benk wrote:what constitutes a homemade? because I just molded a K'Nex gear with clay and then pour melted plastic into the mold, would that count as "homemade", cause I made it?

I would think so.

does anyone have any idea for the "moving air" task...? I'm so lost for that task...

First thought that comes to mind for the air task would be a balloon filled with air that can be released to do some sort of work.