The beam is made of a polyester that has the stress strain
Chapter 6, Problem 6-177(choose chapter or problem)
The beam is made of a polyester that has the stress– strain curve shown. If the curve can be represented by the equation \(\sigma=\left[20 \tan ^{-1}(15 \epsilon)\right] \mathrm{ksi}\), where \(\tan ^{-1}(15 \epsilon)\) is in radians, determine the magnitude of the force P that can be applied to the beam without causing the maximum strain in its fibers at the critical section to exceed \(\epsilon_{\max }=0.003 \text { in. } / \mathrm{in}\).
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