Problem

In the following exercises, solve the given maxim…

Problem 41 Easy Difficulty

In the following exercises, solve the given maximum and minimum problems.
For raising a load, the efficiency $E$ (in $\%$ ) of a screw with square threads is $E=\frac{100 T(1-f T)}{T+f},$ where $f$ is the coefficient of friction and $T$ is the tangent of the pitch angle of the screw. If $f=0.25$ what acute angle makes $E$ the greatest?

Answer

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Calculus 1 / AB

Basic Technical Mathematics with Calculus

Chapter 24

Applications of the Derivative

Section 7

Applied Maximum and Minimum Problems

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Allyn J. Washington, Richard S. Evans

Basic Technical Mathematics with Calculus

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