Differential Equations › Section C · Second order differential equations › Topic C.11

Mechanical vibrations

A mass bouncing on a spring brings together everything in this section: the three kinds of roots become three kinds of damping, and the nonhomogeneous methods explain beats, resonance and the steady response to a driving force.

In this topic

  • Building the model
  • Free, undamped motion
  • Worked example: amplitude and phase
  • Free, damped motion
  • Worked example: three dampers
  • Forced motion without damping: beats
  • Resonance
  • Forced motion with damping
  • Worked example: driving at the natural frequency
  • The electrical analogy
  • Common mistakes to avoid
  • Key takeaways

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