Elevators!

20130128-153003.jpg89 (Yeah, missed a few days. Last week was “Quarterly Assessment” week and was not very photogenic.) Today the conceptual classes are applying Newton’s 2nd Law to the motion of elevators. Since I don’t want any student to feel obligated to reveal their weight to their classmates, I am the one who gets to stand on the bathroom scale. We use the differences in the scale reading when starting to move and when coming to a stop (compared to standing still) to determine the acceleration of the elevator at different points in its motion. I’m wearing my favorite brown boots in this photo, and they are pretty heavy. 😉

##UFPM

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