A material has a viscoelastic response that can be modeled by a maxwell model, where spring constant is 50 MPa and the dashpot viscosity is 600 MPa-s.
(a) Calculate the relaxation time of the material
(b) Is the material is initially stretched to a strain of 0.2, what will be the stress in the material after six seconds
(c) How much time will it take for the stress to reach one tenth of its initial value?