Archimedes (of Eureka fame) provided explanations of how levers worked and is purposed to have said, “Give me a place to stand and with a lever I will move the whole world.” But what is a lever and how does it provide mechanical advantage? The grade 12 physics class set out to find out by performing a lab to answer the questions (1) What class of lever is a door, and (2) how does the length of the effort arm in a lever system affect the lever’s mechanical advantage? With just a tape measure, post it notes, their index fingers and their minds, they set up their experiments and pushed their way to the answers.


Nov. 6th, 2013 – A Place to Stand