Need help on Practice Problems PLEASE!! Trying to work practice problems before I do the homework & I need help. If someone could show me step-by-step bow to do these two problems that would be GREAT. A weight of 12 N is located at a distance of 14 cm from the fulcrum of a simple balance beam. At what distance from the fulcrum should a weight of 21 N be placed on the opposite side in order to balance the system? A weight of 5 N is located 13 cm from the fulcrum on the beam of a simple balance. What weight should be placed at a point 7 cm from the fulcrum on the opposite side in order to balance the system?