(Solved): A steel pipe (D=170mm;d=150mm) supports a concentrated load of P as shown ...

???????

A steel pipe $$(D=170\mathrm{mm};d=150\mathrm{mm})$$ supports a concentrated load of $$P$$ as shown in Figure. The span length of the cantilever beam is $$\mathrm{L}=1.2\mathrm{m}$$. If the allowable shear stress for the pipe shape is $$75\mathrm{MPa}$$, determine the maximum load P than can be applied to the cantilever beam. (Total $$6\mathrm{pts}$$ )