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  2. Dynamic rollover - Wikipedia

    en.wikipedia.org/wiki/Dynamic_rollover

    Only upon passing the pivot line will the object roll to the corresponding adjacent side of the base. The static rollover critical angle can be determined by measuring the angle between level ground and an imaginary line drawn from skid to skid, when the helicopter's center of gravity is located on the upward pivot line. [4] [5]

  3. Bellcrank - Wikipedia

    en.wikipedia.org/wiki/Bellcrank

    Moving rods or cables are attached to the outer ends of the L. When one is pulled, the L rotates around the pivot point, pulling on the other rod. A typical 180-degree bellcrank consists of a straight bar that pivots at or near its center. When one rod is pulled or pushed, the bar rotates around the pivot point, pulling or pushing on the other rod.

  4. Center of percussion - Wikipedia

    en.wikipedia.org/wiki/Center_of_percussion

    The center of percussion is the point on an extended massive object attached to a pivot where a perpendicular impact will produce no reactive shock at the pivot. . Translational and rotational motions cancel at the pivot when an impulsive blow is struck at the center

  5. Hinged arch bridge - Wikipedia

    en.wikipedia.org/wiki/Hinged_arch_bridge

    A hinged arch bridge is one with hinges incorporated into its structure to allow movement. In structural engineering, a hinge is essentially a "cut in the structure" that can withstand compressive forces. In a steel arch the hinge allows free rotation, [2] somewhat resembling a common hinge. The most common hinged arch bridge varieties are the ...

  6. Four-bar linkage - Wikipedia

    en.wikipedia.org/wiki/Four-bar_linkage

    A link connecting to a ground line by a prismatic joint is called a slider. Sliders are sometimes considered to be cranks that have a hinged pivot at an infinitely long distance away perpendicular to the travel of the slider. A link connecting to two other links is called a floating link or coupler.

  7. Lever - Wikipedia

    en.wikipedia.org/wiki/Lever

    A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals the power out, and the ratio of output to input force is given by the ratio of the distances from ...

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