The rigid block him a weight of 80 kip and is to bo, supported by posts A and B, which are made of A-30 Part A steel, and the post C: whichis made of C83400 red brass If all the posts have the same original length before they are loaded determine the average normal stress developed in each post when post C' is heated so that its foreperature is increased by 25 1 F. Each post has a cross-upchoral arpa ol 5 in Fig... Show mor