2. Relevant equations: N=mg; M=Fl 3. The attempt at a solution: i find that the normal force of the rope AD is 8.5N. Hello. Sorry that in my first post i'm already asking for help, but i'm getting really desperate with this problem. I need to find the Normal force at the point O and direction of it. I tried multiplying the N of the rope times cos of 45° but it's not right. The answer should be: 7.2N, 57° vertical. Thanks in advance. P.S. I apologise for my bad english.