1. A spring-mass-damper system of M -0.05 Ib.s/in, K =15 Ib/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

F(+)

етик

X(+)