1. The Cauchy stress in an incompressible fluid is given by T= -pI + 2µD, where u is a material constant. (a). For the homogeneous motion X1 = X1 + u(X2, t), x2 = X2, X3 = X3, derive the Cauchy stress. (b). Express the balance of linear momentum equations in terms of p and u. (d). Consider the special case where u(X2, t) momentum equations are satisfied at the absence of body force if and k(t) is linear in t. K(t)X2. Show that the linear = const

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