Question

1. A spring-mass-damper system of M =0.05 Ib.s/in, K=15 lb/in, and C =0.7 Ib.s/in is subjected to a harmonic force F(t)=30 Cos (10t) Ibf. Determine: (a) The equation of motion of the system (b) The response as function of time (c) The value of the resonance frequency (d) The transmitted force (e) The range of frequencies for which greater force would be transmitted (f) Redesign the system such that only full force is transmitted to the foundation Plt) x(+)

Answer 1

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(e) for goatee force would be transmite oriented < (by transitivity and speed (frequ) ratio Goebb] or on his <r (wa 1056 sol10 <w cloro (F) for feell foo ce transmissim lezl] To u tom = r. (W = 1056 By Graph so force shuld be TFCE) = 30 C08 (1056)