1. Having really hard time understanding the concept of moment and equilibrium in statics. In the following picture the man is carrying a 6kg uniform rigid board. I'm asked to calculate the amount of force the man feels on his shoulder. (at point A) Now I know I'm supposed to start by making a free body diagram, but I don't know where would the weight of the board be placed. Is it in center of the board regardless of the support point at A, or do I have to separate the weight into 2 components based on its length, one in front of the man and one behind him?