The spring constant is k = 785 N/m. The spring is unstretched when x = 0. Neglect the mass...

The spring constant is k = 785 N/m. The spring is unstretched when x = 0. Neglect the mass of the pulley, that is, assume that the tension in the rope is the same on both sides of the pulley. The system is released from rest with x = 0. Determine x as a function of time.