A team of engineering students builds the simple seismograph shown. The coordinate ,xi mea...

A team of engineering students builds the simple seismograph shown. The coordinate ,xi measures the local horizontal ground motion. The coordinate x measures the position of the mass relative to the frame of the seismograph. The spring is unstretched when x = 0. The mass m -1 kg, the spring constant k = 10 N/m. and c = 2 N-s/m. Suppose that the seismograph is initially stationary and that at t = 0 it is subjected to an oscillatory ground motion .xi; = 10 sin 2t mm. What is the amplitude of the steady-state response of the mass? (See Example 21.7.)