(3) Km = 3.01 kg mass starts from rest and slides a distance d down a frictionless 9 = 28.5 deg incline. While sliding, it comes into contact with an unstressed spring of negligible mass, as shown in the gure below. The mass slides an additional 0.161 m as it is brought momentarily to rest by compression of the spring (k = 396 Mm). Calculate the initial separation d between the mass and the spring