Problem 2 (16 points) During turning tests, it was found that the tool life at a cutting speed of 150 m/min was 20 min, and the tool life at a cutting

speed of 90 m/min was 58 min. Determine the following: A. Calculate the values of n and C in the Taylor tool life equation. B. Based on your results, calculate the cutting speed needed to have a tool life of 35 min.