Two lead screw and saddle arrangements, A and B, are being considered for moving high pressure water washer on the machine. Using the details provided, recommend an arrangement for application based on their efficiency. Arrangement A : The square thread has a depth of 15 mm and a mean diameter of MDA mm. The coefficient of friction on the sliding surface of the lead screw is 0.25. Arrangement B: The square thread has a depth of 12 mm and a mean diameter of 36 mm. The coefficient of friction on the sliding surface of the lead screw is 0.2 Where, MDA mm= 58