A machine is subject to unbalanced motion as shown in

figure, the mass of the machine is m = 120 kg and the spring and damping in the

machine is assembled has values of k = 800 kN / m and c = 500 kg / s. The

magnitude of the unbalanced force is 274 N at rotational speed

3000 rpm.

a) Determine the amplitude of the movement produced by the unbalance.

b) If the mass that unbalances the system corresponds to 1% of the total mass,

determine the value of the eccentricity.

Guide Guide x( 1) Machine of total mass m C e Friction free Rubber floor mounting surface modeled as a spring and a damper