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A preeminent bicycle company is disappointed with the negative feedback they have received on their latest model, and they have pinpointed the problem to an outdated bicycle crank design that they assumed would still withstand typical loads. To protect their reputation, they have outsourced the task of analyzing the crank to you, providing you with the geometry of the bicycle crank and attached pedal shaft shown below. The dimensions are given in inches. The material they selected has an Young's modulus E = 10000 ksi 2.8x10⁷ psi and Poisson ratio ν=0.3. 

https://confluence.cornell.edu/download/attachments/82384572/crankDiagram.jpg?version=1

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