In a turning operation, the original workpiece is 150 mm in diameter and 350 mm long. These parts are turned in a single pass along their complete length to a final diameter of 145 mm A feed of 0.225 mm/rev is used in the operation. If the cutting speed = 300 m/min., the tool must be changed every 4 workpieces; but if the cutting speed = 125 m/min., the tool can be used to produce 22 workpieces between tool changes. (a) What is the material removal rate (in mm3/s) for the cutting speed of 300 m/min.? (b) What is the machining time (in min.) for each cutting speed? (c) Determine the Taylor tool life equation for this job. What are the values for n and C?