A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ?s = 0.595, and the kinetic friction coefficient is ?k = 0.395. The combined mass of the sled and its load is m = 336 kg. The ropes are separated by an angle ? = 29°, and they make an angle ? = 30.8° with the horizontal. The tensioin is 870.76N. If this rope tension is maintained after the sled starts moving, what is the sled\'s acceleration?