Question 2 2.1 In an open-loop positioning system, a leadscrew has a pitch of 8mm and a step angle of 1.8 degrees. The range of the worktable axis is 250mm and there are 14 bits in the storage register. Calculate the control resolution. (4) 2.2 Calculate the accuracy and repeatability of the system in 2.1 if the standard deviation is 0.035mm (3)