1. Harry, who weighs 360 N, and 170 N Gretchen are about to play on a 8.00 m long seesaw. He sits at one end and she at the other. Where should the pivot be located if they are to be balanced? 2. F1R1 = F2 R2; F1=360N F2 = 170 N. The problem gives the total length, and I know I need to find out the distance of Gretchen first, but I can't seem to figure it out. I have also used the formula (M1*g)R1 = (M2*g)R2, but again I'm not sure how to figure out the distance of Gretchen. 3. I tried to use this formula to figure out Gretchen's distance. To = r (mass). 530 = 170 (8) = 3.12, but that answer is incorrect. Please help.