Showing posts with label AP Solutions. Show all posts
Showing posts with label AP Solutions. Show all posts

Monday, December 4, 2006

Error in AP Solution Sheet

Kevin Lee pointed out an error in the solution I provided to Problem 3 on R-2. I took the torque due to tne mass of the beam as counterclockwise, but it is a clockwise torque and it should appear on the same side of the torque balance equation as M2. Thus
M2g x 1.75 + 200 x .5 = 250 x 1 or M2= (250-100)/1.75