-Consider a 50 mm diameter sha

-Consider a 50 mm diameter shaft of the gray cast iron of Table 7.1. If a safety factor of 3.0 against fracture is required, what is the largest torque that can be applied along with a compressive axial force of 250 kN? A building column 400 mm in diameter is made of the sandstone of Table 7.1. It resists a compressive force P and a torque T = 34,000 N·m, and a safety factor of 4.0 against fracture is required. (a) What is the largest compressive force P that can be permitted? (b) If only the torsion is applied, that is P = 0, is the safety factor requirement met? If not, what minimum value of compressive force P must be applied to satisfy the safety factor?

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