The lives of two tools A & B, governed by the equation VT0.125 = 2.5 and VT0 = 7 respectively in certain machining operation where V is the cutting velocity in m/s and T is the tool life in sec. find out the speed V at which both the tools will have the same life.
Also calculate the corresponding tool life. If you have to machine at a cutting speed of 1m/s, then which one of these tools will you choose in order to have less frequent tool changes?