A body is subjected to a tensile stress of 1200 Mpa on one plane and another tensile stress of 600 Mpa on a plane at right angles to the former. It is also subjected to a shear stress of 400 Mpa on the same planes. The maximum normal stress will be

A body is subjected to a tensile stress of 1200 Mpa on one plane and another tensile stress of 600 Mpa on a plane at right angles to the former. It is also subjected to a shear stress of 400 Mpa on the same planes. The maximum normal stress will be