A block of mass M = 115.0 kg rests on an inclined plane that makes an angle of 30.0o with the horizontal. It is attached to a wall by a spring with spring constant k = 545.0 N/m. A string connects the block over a frictionless support to a second block of mass M that hangs freely. If the coefficient of static friction between the block and the ramp is µs = 0.48, what are the maximum and minimum values of the spring stretch that allow the system to remain in equilibrium.