Friday, September 5, 2008
Today we looked at the simple machine; levers.
We made catapults using iceblock sticks, pencils and winegums. The pencil was the fulcrum or pivot point.
We discovered that the iceblock stick acted as a first class lever and that the further away the winegum was from the fulcrum the bigger the force was and the higher it flew in the air!
Some people had a few problems with their winegum flying so high that they got stuck in the rafters... sorry John you may find some mouldy winegums at the end of the year when you clean up!
We learnt that a lever has 3 parts:
- fulcrum or pivot point