An introduction to the step response of a 2nd order system with complex poles and zero initial conditions using Laplace techniques. Includes illustrations on numerical examples.

Tutorial on the computation of responses for under damped 2nd order systems, using Laplace and time domain methods. Includes worked solutions.

Beginning from the standard form for 2nd order models using damping ratio and natural frequency, considers how the frequency of oscillation and overshoot depend upon the damping ratio (assumed less than one). Uses zero initial conditions.