A CNC router moves a cutting tool along the X and Y axes using two identical motor driven ball screw assemblies (each with a pitch of 12mm ). A calibration test was performed on the Y-axis with 50 full rotations of the motor and the following displacement measurements were recorded: 604.35mm,603.65mm,603.50mm,604.00mmand604.50mm i. Determine the programmed displacement of the Y-axis (in mm ). ii. Calculate the accuracy error (in mm ). iii. The CNC router vendor lists the repeatability of each stage as +/0.50mm. Is the system still repeatable? Show all your work clearly