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  2. Differential pulley - Wikipedia

    en.wikipedia.org/wiki/Differential_pulley

    Next, the downward force acting on the lower pulley equals the upward forces acting on it, so F L = F W + F Y, or 2 F W because F W = F Y. Additionally, there is no net torque or moment around the compound pulley, so the clockwise torque is equal to the anticlockwise torque: F W R + F X r = F Y r + F Z R. Substituting F X and F Y from the above ...

  3. List of most-viewed YouTube channels - Wikipedia

    en.wikipedia.org/wiki/List_of_most-viewed...

    This is an accepted version of this page This is the latest accepted revision, reviewed on 7 October 2024. This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. Indian record label T-Series is the most-viewed YouTube channel, with over 267 billion views. The list of most-viewed YouTube channels ...

  4. Continuously variable transmission - Wikipedia

    en.wikipedia.org/wiki/Continuously_variable...

    Steel-reinforced V-belts are sufficient for low-mass, low-torque applications like utility vehicles and snowmobiles, but higher-mass and -torque applications such as automobiles require a chain. Each element of the chain must have conical sides that fit the pulley when the belt is running on the outermost radius.

  5. Pulley - Wikipedia

    en.wikipedia.org/wiki/Pulley

    1. Sheave without a rope. A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft. A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force.

  6. Mechanical advantage - Wikipedia

    en.wikipedia.org/wiki/Mechanical_advantage

    Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever. Machine components designed to manage forces and movement in this way ...

  7. Semi-trailer truck - Wikipedia

    en.wikipedia.org/wiki/Semi-trailer_truck

    A cab over semi-tractor. Tractor with an end-dump trailer. A FAW semi-trailer truck in China. A semi-trailer truck[1] (also known by a wide variety of other terms - see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel.

  8. List of most-viewed YouTube videos - Wikipedia

    en.wikipedia.org/wiki/List_of_most-viewed...

    Since Lady Gaga's "Bad Romance" in 2009, every video that has reached the top of the "most-viewed YouTube videos" list has been a music video. In November 2005, a Nike advertisement featuring Brazilian football player Ronaldinho became the first video to reach 1,000,000 views. [1] The billion-view mark was first passed by Gangnam Style in ...

  9. Capstan equation - Wikipedia

    en.wikipedia.org/wiki/Capstan_equation

    The capstan equation[ 1 ] or belt friction equation, also known as Euler–Eytelwein formula[ 2 ] (after Leonhard Euler and Johann Albert Eytelwein), [ 3 ] relates the hold-force to the load-force if a flexible line is wound around a cylinder (a bollard, a winch or a capstan). [ 4 ][ 1 ] It also applies for fractions of one turn as occur with ...