Week of 10/30

On Wednesday, three students came to office hours. One student had never been there before, and it was nice to see a new face this far into the semester. I helped them as they worked through the homework and came across questions. The most notable involved finding the center of mass of two metal bars that have been welded together, and a system where two people were standing on a platform. One was holding a football which he threw to the other, and the students needed to find how the center of mass changed and the velocity of the platform using conservation of momentum.