Wednesday, April 2, 2008

Reviewed Friction Lab

Demonstrated static vs kinetic friction using bricks and force sensor.

Reviewed factors affecting contact friction: Normal force and surface texture
Discussed factors affecting air resistance: Speed and cross sectional area

Described Air Resistance Lab
For write-up: Answer preliminary questions 1-4, show data table with all raw data and averages and then square of average terminal velocity, 2 graphs (analysis question 1), Which model gives the best fit straight line through the origin?, Which model best describes air resistance for the falling coffee filter, analysis question 4.

Lab write-up due on Friday.

Students did the air resistance lab.