부경대학교 공학수학 족보

과목명: 공학수학(2)
(no friction, no damping),

학번:
(b) (10 find

이름:
Points) the Letting      kg, the initial

1. (30 Points) (a) (10 Points) Find the model of the mechanical system in Fig.149
     kg sec ,    kg sec , solution satisfying

conditions         , ′      meter sec, ′      meter  sec, and (c) (10 Points) Find the model (the system of ODEs) in (a) extended by adding another mass  and another spring of modulus  in series

2. (30 Points) Using Laplace transforms, find the currents    and    in the network in Fig.145 with  and  measured in terms of the usual units,     volts if ≤ ≤   sec and  thereafter, and    , ′    

3. (20 Points) Solve the initial value problem for a damped mass-spring system acted upon by a sinusoidal force for some time interval (Fig.136), ″  ′     ,  …