Aperson is standing on a level floor. his head, upper torso, arms, and hands together weigh 458 n and have a center of gravity that is 1.31 m above the floor. his upper legs weigh 101 n and have a center of gravity that is 0.785 m above the floor. finally, his lower legs and feet together weigh 88.8 n and have a center of gravity that is 0.215 m above the floor. relative to the floor, find the location of the center of gravity for the entire body.