The mass is 100 kg. The spring constant is k =4 N/m, and c = 24 N-s/m. The base is subject...

The mass is 100 kg. The spring constant is k =4 N/m, and c = 24 N-s/m. The base is subjected to an oscillatory displacement of frequency ωi = 0.2 rad/s. The steady-state amplitude of the displacement of the mass relative to the base is measured and determined to be 200 mm. What is the amplitude of the displacement of the base? (Sec Example 21.7.)