The state of plane strain on an element is ϵx = −300(10−6), ϵy = 0, and γxy = 150(10−6) De...

The state of plane strain on an element is ϵx = −300(10−6), ϵy = 0, and γxy = 150(10−6) Determine the equivalent slate of strain which represents (a) the principal strains, and (b) the maximum in-plane shear strain and the associated average normal strain. Specify the orientation of the corresponding elements for these states of strain with respect to the original element.