I got the weight of both the lower block and the entire heavy rope, but that did not give me the tension. (4kg + 5kg)(9.8)=88.2N but that's not the 120N I'm supposed to get. What am I doing wrong?
No, I'm not the same person as spacecadette. He was able to figure out that the tension at the top of the rope is 120N. I wasn't able to get that far. Hopefully once i know how to get that, I'll know how to get the tension mid-way along the rope.
Can someone please help me with this problem. I don't understand how to get the tension at different points in the rope. I got the acceleration easily. But I don't know how to do the other 2 parts of the problem.