A brittle material has the properties Sut 5 30 kpsi and Suc 5 90 kpsi. Using the brittle CoulombMohrand modified-Mohr theories, determine the factor of safety for the following states ofplane stress.(a) sx 5 25 kpsi, sy 5 15 kpsi(b) sx 5 15 kpsi, sy 5 215 kpsi(c) sx 5 20 kpsi, txy 5 210 kpsi(d) sx 5 215 kpsi, sy 5 10 kpsi, txy 5 215 kpsi(e) sx 5 220 kpsi, sy 5 220 kpsi, txy 5 215 kpsi
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