A person sets a big box on the loft of his barn. The box consists of a mass of around 32.4 kg. A rope runs from the box above a pulley to a hanger which the person begins to pile things on. If the suspending mass reaches 12.7 kg, the box in the loft begins to slide. Determine the coefficient of static friction among the box and the loft? When the coefficient of kinetic friction is 20 percent less than the coefficient of static friction, determine what would the acceleration of the box be once it starts moving?