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A new lathe insert is used on a 100 mm diameter steel workpiece. When the lathe operates at 300 rpm, the insert lasts about 321 minutes, but at 100 rpm, it lasts for 2010 minutes. What material could you assume the lathe insert is made out of?

Answer :

Answer:

two unknowns (C and n) can use two equations

1) vT^n=C

2)vT^n=C

n= 0.6

C=9510

Ceramic

Explanation:

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