2. The box is starting from the rest and slides down a frictionless ramp a distance d before hitting the spring. Use 0 30.d-B/10 m, k CN/m, mass of the box D kg. a) Take the spring totally compressed x distance, then write an equation to find x. Then plug the values and solve x? b) If there is a friction between the box and incline, What is the frictional force? Use kinetic friction coeficient as 0.5. c) Find the loss of energy due to friction when box reach dux distance. d) What is the x with having friction