A 91-kg machine element supported by four springs, each of constant 175 N/m. is subjected...

A 91-kg machine element supported by four springs, each of constant 175 N/m. is subjected to a periodic force of frequency 0.8 Hz and amplitude 89 N. Determine the amplitude of the fluctuating force transmitted to the foundation if (a) a dashpot with a coefficient of damping c = 365 N∙ s/m is connected to the machine and to the ground, (b) the dashpot is removed.

Fig. P19.148