An abrasive cutoff wheel has an outer diameter of 5 in, is in thick, and has a -in bore. The wheel weighs 5 oz and runs at 12 000 rev/min. The wheel material is isotropic, with a Poisson's ratio of 0.2, and has an ultimate strength of 12 kpsi.
Determine and justify the location of the critical stress element.
Determine the stresses on the stress element at the critical location and the factor of safety corresponding to fracture.
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