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  2. Capstan equation - Wikipedia

    en.wikipedia.org/wiki/Capstan_equation

    where is the applied tension on the line, is the resulting force exerted at the other side of the capstan, is the coefficient of friction between the rope and capstan materials, and is the total angle swept by all turns of the rope, measured in radians (i.e., with one full turn the angle =).

  3. File:Linear friction-1.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Linear_friction-1.pdf

    Linear_friction-1.pdf (370 × 258 pixels, file size: 25 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  4. Friction - Wikipedia

    en.wikipedia.org/wiki/Friction

    Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other. [7] [8] Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces. [9] [10] [11] Skin friction is a component of drag, the force resisting the motion of a fluid across the surface of a body.

  5. Helix angle - Wikipedia

    en.wikipedia.org/wiki/Helix_angle

    The efficiency can be plotted versus the helix angle for a constant friction, as shown in the adjacent diagram. The maximum efficiency is a helix angle between 40 and 45 degrees, however a reasonable efficiency is achieved above 15°. Due to difficulties in forming the thread, helix angle greater than 30° are rarely used.

  6. Frictional contact mechanics - Wikipedia

    en.wikipedia.org/wiki/Frictional_contact_mechanics

    Contact mechanics is the study of the deformation of solids that touch each other at one or more points. [1] [2] This can be divided into compressive and adhesive forces in the direction perpendicular to the interface, and frictional forces in the tangential direction.

  7. Person arrested after trying to jump fence outside White House

    www.aol.com/person-arrested-trying-jump-fence...

    A person was arrested after attempting to climb a temporary fence near the White House this morning, according to a U.S. Secret Service spokesperson. The Secret Service said the person was ...

  8. FAA announces temporary restrictions on drone flights in New ...

    www.aol.com/faa-announces-temporary-restrictions...

    The Federal Aviation Administration issued temporary flight restrictions prohibiting drone flights over parts of New Jersey following an influx of sightings in recent weeks.. The notice, which ...

  9. Friction in business isn’t always bad. Timely intervention ...

    www.aol.com/finance/friction-business-isn-t...

    Friction-fighters create new rituals to ensure the opposite. Have teams identify wasted effort, pointless practices, and unnecessary impediments to action and systematically remove them. Beware of ...