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  2. Pendulum (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Pendulum_(mechanics)

    A pendulum is a body suspended from a fixed support such that it freely swings back and forth under the influence of gravity. 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 towards the equilibrium position.

  3. Elastic pendulum - Wikipedia

    en.wikipedia.org/wiki/Elastic_pendulum

    where is the kinetic energy and is the potential energy. Hooke's law is the potential energy of the spring itself: = where is the spring constant. The potential energy from gravity, on the other hand, is determined by the height of the mass. For a given angle and displacement, the potential energy is:

  4. Pendulum - Wikipedia

    en.wikipedia.org/wiki/Pendulum

    The Q is equal to 2π times the energy stored in the pendulum, divided by the energy lost to friction during each oscillation period, which is the same as the energy added by the escapement each period. It can be seen that the smaller the fraction of the pendulum's energy that is lost to friction, the less energy needs to be added, the less the ...

  5. Kapitza's pendulum - Wikipedia

    en.wikipedia.org/wiki/Kapitza's_pendulum

    The potential energy of the pendulum is due to gravity and is defined by, in terms of the vertical position, as = (⁡ + ⁡). The kinetic energy in addition to the standard term = ˙ /, describing velocity of a mathematical pendulum, there is a contribution due to vibrations of the suspension

  6. Lagrangian mechanics - Wikipedia

    en.wikipedia.org/wiki/Lagrangian_mechanics

    Kinetic energy T is the energy of the system's motion and is a function only of the velocities v k, ... Consider a pendulum of mass m and length ...

  7. Double pendulum - Wikipedia

    en.wikipedia.org/wiki/Double_pendulum

    A double pendulum consists of two pendulums attached end to end.. In physics and mathematics, in the area of dynamical systems, a double pendulum, also known as a chaotic pendulum, is a pendulum with another pendulum attached to its end, forming a simple physical system that exhibits rich dynamic behavior with a strong sensitivity to initial conditions. [1]

  8. Generalized coordinates - Wikipedia

    en.wikipedia.org/wiki/Generalized_coordinates

    which illustrates the kinetic energy is in general a function of the generalized velocities, coordinates, and time if the constraints also vary with time, so T = T(q, dq/dt, t). In the case the constraints on the particles are time-independent, then all partial derivatives with respect to time are zero, and the kinetic energy is a homogeneous ...

  9. Mechanical energy - Wikipedia

    en.wikipedia.org/wiki/Mechanical_energy

    The pendulum reaches greatest kinetic energy and least potential energy when in the vertical position, because it will have the greatest speed and be nearest the Earth at this point. On the other hand, it will have its least kinetic energy and greatest potential energy at the extreme positions of its swing, because it has zero speed and is ...