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  2. Rheonomous - Wikipedia

    en.wikipedia.org/wiki/Rheonomous

    A simple pendulum. As shown at right, a simple pendulum is a system composed of a weight and a string. The string is attached at the top end to a pivot and at the bottom end to a weight. Being inextensible, the string has a constant length.

  3. List of formulae involving π - Wikipedia

    en.wikipedia.org/wiki/List_of_formulae_involving_π

    Download as PDF; Printable version; ... Exact period of a simple pendulum with amplitude ... (PDF), Journal of Integer Sequences, 23: 20.8.2, arXiv: 2009.02025 ...

  4. Simple pendulum - Wikipedia

    en.wikipedia.org/?title=Simple_pendulum&redirect=no

    What links here; Related changes; Upload file; Special pages; Permanent link; Page information; Cite this page; Get shortened URL; Download QR code

  5. Category:Pendulums - Wikipedia

    en.wikipedia.org/wiki/Category:Pendulums

    Simple English; SlovenĨina; ... Download as PDF; Printable version; In other projects ... Seconds pendulum; Simple harmonic motion;

  6. Rayleigh–Lorentz pendulum - Wikipedia

    en.wikipedia.org/wiki/Rayleigh–Lorentz_pendulum

    Rayleigh–Lorentz pendulum (or Lorentz pendulum) is a simple pendulum, but subjected to a slowly varying frequency due to an external action (frequency is varied by varying the pendulum length), named after Lord Rayleigh and Hendrik Lorentz. [1] This problem formed the basis for the concept of adiabatic invariants in mechanics. On account of ...

  7. Phase portrait - Wikipedia

    en.wikipedia.org/wiki/Phase_portrait

    Simple pendulum, see picture (right). Simple harmonic oscillator where the phase portrait is made up of ellipses centred at the origin, which is a fixed point. Damped harmonic motion, see animation (right). Van der Pol oscillator see picture (bottom right).

  8. Pendulum - Wikipedia

    en.wikipedia.org/wiki/Pendulum

    "Simple gravity pendulum" model assumes no friction or air resistance. A pendulum is a device made of a weight suspended from a pivot so that it can swing freely. [1] When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position.

  9. LaSalle's invariance principle - Wikipedia

    en.wikipedia.org/wiki/LaSalle's_invariance_principle

    4.1 Simple example. 4.2 Pendulum with friction. ... Download as PDF; Printable version; In other projects ... is the angle the pendulum makes with the vertical normal