The present investigation deals with the 2-dimensional deformation in a homogeneous microstretch thermoelastic medium with mass diffusion due to mechanical forces. The normal mode analysis technique is used to obtain the components of displacement, microrotation, microstress, mass concentration and temperature change due to normal force and tangential force. The numerical computation has been performed (using matlab software) on the resulting quantities. The computed numerical results are shown graphically to depict the effect of microstretch, diffusion and relaxation times. Some particular cases of interest are also deduced from the present investigation.