Correct option is D
The tool life equation is generally represented by the formula where:
(V) is the cutting speed,
(T) is the tool life,
(n) is the tool life exponent,
(C) is a constant.
Given:
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Question
Find the tool life equation, if a tool life of 80 min is obtained at a cutting speed of 30 m/min and 8 min at 60 m/min.
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