1. The problem statement, all variables and given/known data http://postimg.org/image/z9uzlyt3p/ 2. Relevant equations F=MA W=MG 3. The attempt at a solution the force on the block must be gravity *its mass (weight) since it hangs, but because of the pulley and other box pulling the other way, creating an T, the force on the hanging block should be -MG - T (from M2). -Mg because the wight is hanging down I tried T-MG, but it was wrong as well It tells me it is wrong, what is the flaw in my logic?