Circular shaft Applied mechanics

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The discussion focuses on calculating the appropriate diameter for a circular shaft in a pulley system to prevent failure due to maximum shear stress. Each pulley exerts a tangential force resulting in an additional load of 500N on the shaft. The tensile yield strength of the shaft material is specified as 248MN/m2. Participants are encouraged to show their calculations and reasoning for determining the shaft diameter. The emphasis is on applying the maximum shear stress criterion in the analysis.
Adam Harris
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In the pulley system shown in Figure Q1 the tangential forces on the pulleys are shown. Each pulley adds an additional load / weight of 500N on the shaft. Calculate a suitable shaft diameter so that to avoid failure by the maximum shear stress criterion. The tensile yield strength of the shaft material is 248MN/m2 . The shaft weight may be neglected and the shaft bearings may be treated as simple supports.
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