A hole is to be punched out of a plate having a shearing strength of 60 ksi. The compressive stress in the punch is limited to 50 ksi. a. Compute the maximum thickness (mm) of plate in which a hole 2 inches in diameter can be punched.  b. If the plate is 0.315-inch-thick, determine the diameter (mm) of the smallest hole that can be punched.

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Pressure and Stress