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  2. Newton's cradle - Wikipedia

    en.wikipedia.org/wiki/Newton's_cradle

    Newton's cradle is a device, usually made of metal, that demonstrates the principles of conservation of momentum and conservation of energy in physics with swinging spheres. When one sphere at the end is lifted and released, it strikes the stationary spheres, compressing them and thereby transmitting a pressure wave through the stationary ...

  3. Pendulum (mechanics) - Wikipedia

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

    Consider Newton's second law, = where F is the sum of forces on the object, m is mass, and a is the acceleration. Newton's equation can be applied to the tangential axis only. This is because only changes in speed are of concern and the bob is forced to stay in a circular path.

  4. Office toy - Wikipedia

    en.wikipedia.org/wiki/Office_toy

    A Newton's cradle executive toy. An office toy (also known as an executive toy or a desk toy) is a novelty item typically placed on the desk of a corporate executive or other office worker. They have no work-related function, but are often intended to provide decoration or pleasure, relieve stress or inspire creativity.

  5. 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.

  6. Lagrangian mechanics - Wikipedia

    en.wikipedia.org/wiki/Lagrangian_mechanics

    Simple pendulum. Since the rod is rigid, the position of the bob is constrained according to the equation f(x, y) = 0, the constraint force C is the tension in the rod. Again the non-constraint force N in this case is gravity. Newton's laws and the concept of forces are the usual starting point for teaching about mechanical systems. [5]

  7. Three-body problem - Wikipedia

    en.wikipedia.org/wiki/Three-body_problem

    The gravitational problem of three bodies in its traditional sense dates in substance from 1687, when Isaac Newton published his Philosophiæ Naturalis Principia Mathematica, in which Newton attempted to figure out if any long term stability is possible especially for such a system like that of the Earth, the Moon, and the Sun, after having ...

  8. Schiehallion experiment - Wikipedia

    en.wikipedia.org/wiki/Schiehallion_experiment

    A pendulum hangs straight downwards in a symmetrical gravitational field. However, if a sufficiently large mass such as a mountain is nearby, its gravitational attraction should pull the pendulum's plumb-bob slightly out of true (in the sense that it does not point to the centre of mass of the Earth). The change in plumb-line angle against a ...

  9. Pendulum wave - Wikipedia

    en.wikipedia.org/wiki/Pendulum_wave

    A pendulum wave is an elementary physics demonstration and kinetic art comprising a number of uncoupled simple pendulums with monotonically increasing lengths. As the pendulums oscillate, they appear to produce travelling and standing waves , beating , and random motion.