1. The problem statement, all variables and given/known data The figure shows a person whose weight is W = 725 N doing push-ups. Find the normal force exerted by the floor on (a)each hand and (b)each foot, assuming that the person holds this position. 2. Relevant equations center of gravity = cg Xcg = (W1x1 + w2x2 +...)/(w1 + w2...) net torque = w1x1 + w2x2 +... 3. The attempt at a solution Placing the axis of rotation at the far left gives: W1(0) + W2(.84) + W3(1.25) / 725 = .84 Placing it at the far right gives: W1(1.25) + W2(.41) + W3(0) / 725 = .41 Solving these yields W1 = [297.25 - W2(.41)]/1.25 or W2 = 297.25 - W1(1.25) and W2(.84) + W3(1.25) = 609 However, there are still too many unknowns. Where do I take it from here?