08.48: A block of mass M on a horizontal surface is connected to the
2pe77ude 8+: sdlh4zb m vyfjxl)b4ge5 i4d(k end of a massless spring of spring constant k. The block is pulled a distance x from equilibrium and w
72g4:5lp(ybum 87 si x4h d+e4)vlkebdjzd f ehen released from rest, the block moves toward equilibrium. What minimum coefficient of kinetic friction between the surface and the block would prevent the block from returning to equilibrium with non-zero speed?