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
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