Day 110: Energy TransferPosted: March 11, 2013
Today we did a verification lab where some (not all) of the initial gravitational interaction energy is transferred to kinetic energy as a cart goes down a ramp. I started class by having them draw the energy bar charts and derive a formula for how the velocity depends on the height difference, then asked them to draw what they would graph on each axis to linearize it. They are on the edge of really getting the feel of linearizing and this was a good step. Nice that data works out pretty well here too, with a slope right around 2g for most groups.