5. Place the 60 kg lady at 2 meters. Where should the 80 kg man be placed in order to balance the bar? [work] [answer] 6. If a 30 kg girl sits at 1 m and a 20 kg boy sits at 1.5 m on the left side, how much mass needs to be at 1 m on the right side to keep the bar horizontal when the supports are removed? [work] [answer]