Asked by kieran

The efficiency E of a screw is given by E=T(1-0.35T)/T+0.35
where T is the tangent of the pitch angle of the screw and 0.35 is the coefficient of friction . For what value of T>0 is the efficiency the greatest?
Answered by Steve
just a normal min/max problem.

E = T(1-0.35T)/T + 0.35

you sure about that? The T's cancel out.

fix it and show whatcha got, and we can go from there.
Answered by kieran
thats right. i always overthink things never even looked at the T's cancelling
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