Example: An excited mass-spring-damper system can be modeled by the following differential equation. Assume the initial condition of (m =1, B =2, k #3): x(0) = 1, x(0) = -1 d2x dx +2+3x=F dt2 dt F m Show the block diagram of the system relating input to output. L dt L dr sF(s) f(0-) =sF(s)-sf(0-)-(0)