Ablock of mass m = 1.5 kg is attached to a spring with spring constant k = 980 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 21° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.16. in the initial position, where the spring is compressed by a distance of d = 0.11 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero.