In a production turning operation, the workpart is 150 mm in diameter and 300 mm long. A feed of 0.225 mm/rev is used in the operation. If cutting speed is V1=3 m/s, the tool must be changed every 8 workparts; but if cutting speed is V2=2 m/s, the tool can be used to produce 20 pieces between tool changes. 1) For cutting speed V1, determine the machining time Tmy and the tool life T1. 2) For cutting speed V2, determine the machining time Tmy and the tool life T2. 3) Determine the n and C values in the Taylor tool life equation. 4) Determine the cutting speed that will allow the tool to be used for 50 parts between tool changes