Please show your solutions in paper. I will give you a very good feedback. Thank you!

7. Find the magnitude and direction of Fa in Fig. 2.7 for the given system to be in equilibrium. F, = 15N 7 250 750 F = 30N Fig. 2.7 8. A uniform pole 20 ft. long and weighing 80 lbs is held by a boy 2 ft from one end while a man carries the same pole 5 ft from the other end. At what point should a load of 100 lbs, be placed so that the man will carry twice as much weight as the boy