janedoe
Oct23-08, 12:58 PM
In physics i have to build a car that is propelled by a mass falling down a pulley spinning the back axle into motion from rest. We can only use cds as wheels and can have as many as needed. the chast (The rectangular base that holds the tower and wheels) can be made out of any material, a tower that the mass drops down on max of 60 cm. and any material can be use to make the tower. It has to run as far as possible. Is there any suggestion on what to use for the axle. axle holder, materials.