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A D = 1 in diameter solid round bar has a groove 0.1 in deep with a 0.1 in radius machined into it. The bar is made of AISI 1040 CD steel and is subjected to purely reversing torque T of 1800 lbf ∙in. Determine the maximum shear stress taking the effect of the groove into account.

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Answer for the question:

"A D = 1 in diameter solid round bar has a groove 0.1 in deep with a 0.1 in radius machined into it. The bar is made of AISI 1040 CD steel and is subjected to purely reversing torque T of 1800 lbf ∙in. Determine the maximum shear stress taking the effect of the groove into account."

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