A certain pump has a mass of 23 kg and has a rotating unbalance. The unbalance weight is 0.2N and has an eccentricity of 2.5 mm. The pump rotates at 1000 rpm. Its vibration isolator has a stiffness of k=7300 N/m. Compute the force transmitted to the foundation if the isolator damping ratio is (a) Zeta=0.05 and (b) Zeta=0.7.