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  2. Circular motion - Wikipedia

    en.wikipedia.org/wiki/Circular_motion

    Examples of circular motion include: special satellite orbits around the Earth (circular orbits), a ceiling fan's blades rotating around a hub, a stone that is tied to a rope and is being swung in circles, a car turning through a curve in a race track, an electron moving perpendicular to a uniform magnetic field, and a gear turning inside a ...

  3. Trochoid - Wikipedia

    en.wikipedia.org/wiki/Trochoid

    A prolate trochoid with b/a = 5/4 A curtate trochoid with b/a = 4/5. As a circle of radius a rolls without slipping along a line L, the center C moves parallel to L, and every other point P in the rotating plane rigidly attached to the circle traces the curve called the trochoid.

  4. Coin rotation paradox - Wikipedia

    en.wikipedia.org/wiki/Coin_rotation_paradox

    The outer coin makes two rotations rolling once around the inner coin. The path of a single point on the edge of the moving coin is a cardioid.. The coin rotation paradox is the counter-intuitive math problem that, when one coin is rolled around the rim of another coin of equal size, the moving coin completes not one but two full rotations after going all the way around the stationary coin ...

  5. Centripetal force - Wikipedia

    en.wikipedia.org/wiki/Centripetal_force

    One common example involving centripetal force is the case in which a body moves with uniform speed along a circular path. The centripetal force is directed at right angles to the motion and also along the radius towards the centre of the circular path. [3] [4] The mathematical description was derived in 1659 by the Dutch physicist Christiaan ...

  6. Circular reference - Wikipedia

    en.wikipedia.org/wiki/Circular_reference

    Circular references can appear in computer programming when one piece of code requires the result from another, but that code needs the result from the first. For example, the two functions, posn and plus1 in the following Python program comprise a circular reference: [further explanation needed]

  7. Circular orbit - Wikipedia

    en.wikipedia.org/wiki/Circular_orbit

    A circular orbit is depicted in the top-left quadrant of this diagram, where the gravitational potential well of the central mass shows potential energy, and the kinetic energy of the orbital speed is shown in red. The height of the kinetic energy remains constant throughout the constant speed circular orbit.

  8. Great-circle navigation - Wikipedia

    en.wikipedia.org/wiki/Great-circle_navigation

    The atan2 function should be used to determine σ 01, λ, and α. For example, to find the midpoint of the path, substitute σ = 1 ⁄ 2 (σ 01 + σ 02); alternatively to find the point a distance d from the starting point, take σ = σ 01 + d/R.

  9. Cycle graph - Wikipedia

    en.wikipedia.org/wiki/Cycle_graph

    C n Table of graphs and parameters In graph theory , a cycle graph or circular graph is a graph that consists of a single cycle , or in other words, some number of vertices (at least 3, if the graph is simple ) connected in a closed chain.