6. Two identical prismatic bars PQ and RS each weighing 75 N are welded together to form a Tee and are suspended in a vertical plane as shown in Fig. 3.10. P R 75 N S 75 N 100 N Fig. 3.10. Calculate the value of 0, that the bar PQ will make with vertical when a load of 100 N is applied at S. [Ans. 13.25]