A man of weight W= 577 N is doing pushups.( His center of gravity is in the middle of his torso while in the push-up position). The distance from his feet to his center of gravity is L1= 0.852m. The distance from his center of gravity to his hands is L2= 0.413m. Find the normal force exerted by the floor on each hand and each foot, assuming that he holds this position.