Hello, The problem is: Three blocks are connected by two ropes as shown. They are on a surface wit ha coefficient of friction of 0.25. The masses of the blocks are [itex]m_1=6~kg[/itex],[itex]m_2=9~kg[/itex],[itex]m_3=12~kg[/itex]. Block 1 is pulled with a [itex]93~N[/itex] force horizontally as shown. Find the tension in each rope. Apparently I solved this with a rather difficult approach, which I did by making a free-body diagram for each block. I got the same answer, but I'd like to understand this easier method. This simpler method involves treating the three blocks as one system. I couldn't really figure out how to do this. Could someone show me how this method works?