Two cutting tools are being compared for a machining operation.

Two cutting tools are being compared for a machining operation. The tool life equations are
Carbide tool VT^1.6 = 3000
HSS tool VT^0.6 = 200
where V is the cutting speed in m/min and T is the tool life in min. The carbide tool will provide higher tool life if the cutting speed in m/min exceeds

Carbide tool: VT^1.6 = 3000
HSS tool: VT^0.6 = 200

T =		3000		^{1 /1.6}
		V

T =		200		^{1 /0.6}
		V

T =		3000		^{1 /1.6}	=		200		^{1 /0.6}
		V					V

V = 39.389 m/min