PM2017 wrote: Ten086 wrote:
Hey, sorry if this has been asked before: could someone explain to me more in depth about how the first place car in 2010
Was just about to ask the same question lol
I believe that ideally, you want the string to "wrap" through the path of the tip of the lever arm; The tip of the lever arm traces an arc through the air. AFAIK currently the maximum usable string length is 2x the length of the lever arm.
However, if you can get the string to pass through the arc (think of instead of a lever arm, there's a huge disc with a radius of the lever arm, and the string wraps around the edge of the disc) then the usable string length is lever arm * pi, giving you about 150% more length.
They added in extra lever arms to more closely approximate that disc; as the first lever arm reaches 60 degrees, it snags the next lever arm, and so on.
Also, this makes it so that the torque from the mousetrap's spring is more directly translated into a force pulling on the string; as the lever arm gets further away from the drive axle, less and less of the mousetrap's force goes into pulling the string.