The cylindrical portion of a compressed-air tank is made of 5-mm-thick plate welded alon...

The cylindrical portion of a compressed-air tank is made of 5-mm-thick plate welded along a helix at an angle of with the axial direction (Fig. P1.52). The radius of the tank is 250 mm. If the allowable shearing stress parallel to the weld is 30 MPa, calculate the largest internal pressure p that may be applied.