A thin tube of a regular polygonal shape is subject to a given torque. if the volume of material that can be used is limited, demonstrate numerically, using results based on a spreadsheet or otherwise, that as the number of sides increase, the shear stress due to torque decreases. how many sides would give you a stress that is within 0.1% of a thin circular tube?

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thickness t constant J n sided polygon S/n Total perimeter S' is fixed thickness t constant J n sided polygon S/n Total perimeter S' is fixed

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Q Ksn thicknen t nSided polygon I total perimeter fixed T r I Req... View the full answer