tide, what you said is exactly what i was thinking... but where do i start? and how do i get the string not to catch anywhere on the car? like, do i need a plastic piece of some sort?
well, we have to create our own wheels and axle system... like we can't use anything that was made for a wheel or an axle, so i was thinking i would use dowel rods for the axel, and depending on how heavy it was, i would use cds or pvc endcaps for the wheels... and then maybe lead fishing...
i have to build a vehicle "powered soely by gravitational potential energy that will travel at least a linewar distance of 5 meters under its own power. no elastic potential energy (such as a mousetrap) allowed"
i was wondering if anyone out there had any idea on where to start or knew of a...