Question: 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

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.

P = P, sin cost

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