Recent content by WRX200

  1. W

    Finding Centroid Location using Symbolic Math in Matlab

    I was just being dumb, looking at the problem the wrong way. I was trying to relate yc and y, and I wasn't considering how y and dx were factoring into dA and y_bar. I now have: y_bar = y/2 dA = y*dx yc = (1/2) Integral(y2*dx) / Integral(y*dx) evaluated from 0 to b where y =...
  2. W

    Finding Centroid Location using Symbolic Math in Matlab

    Yes, I'm unsure how to manipulate the other functions in order to relate everything. I just seem to be completely missing something
  3. W

    Finding Centroid Location using Symbolic Math in Matlab

    I'm at a complete loss on this one, so far. This problem needs to be solved symbolically with Matalb (which won't be a problem once I know what to do), but I'm not even sure where to begin. Any help would be greatly appreciated [PLAIN]http://img227.imageshack.us/img227/9344/prob18.jpg
  4. W

    Help solving for rate of angular change

    It'll be easier if I just enter this as an image: [PLAIN]http://img40.imageshack.us/img40/7366/prob13.jpg I'm not even really sure where to begin. Any help on a good general direction of where to go would be much appreciated. I need to solve for an expression which describes θ(t) , and the...