A steel bar of rectangular cross section (1.5 in. 2 3 .0 in.) carries a tensile load P (see fig- ure). The allowable stresses in tension and shear are 14,500 psi and 7,100 psi, respectively. Determine the maximum permissible load Pmax.

Explanation:

Value of the cross-sectional area is as follows.

        A =

           = 3.45

The given data is as follows.

          Allowable stress = 14,500 psi

          Shear stress = 7100 psi

Now, we will calculate maximum load from allowable stress as follows.

                       =

                       = 50025 lb

Now, maximum load from shear stress is as follows.

                      =

                      = 48990 lb

Hence, will be calculated as follows.

                  = 48990 lb

Thus, we can conclude that the maximum permissible load is 48990 lb.

the answer is b, have negligible mass