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If the fixed pulley of a two-pulley syst...


If the fixed pulley of a two-pulley system were removed, would the velocity ratio be greater, the same or less?

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the same
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What is the velocity ratio of the two-pulley system shown?

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Knowledge Check

  • Two blocks of masses 6 kg and 4 kg are attached to the two ends of a massless string passing over a smooth fixed pulley. if the system is released, the acceleration of the centre of mass of the system will be

    A
    `g`, vertically downwards
    B
    `g/5`, vertically downwards
    C
    `g/25`, vertically downwards
    D
    zero

  • The velocity v of the pulley is:

    A
    `10 ms^(-1)` upwards
    B
    `10 ms^(-1)` downward
    C
    `20 ms^(-1)` upwards
    D
    `20 ms^(-1)` downward

  • Two weights w_(1) and w_(2) are suspended from the ends of a light string passing over a smooth fixed pulley. If the pulley is pulled up at an acceleration g , the tension in the string will be

    A
    `(4w_(1)w_(2))/(w_(1)+w_(2))`
    B
    `(2w_(1)w_(2))/(w_(1)+w_(2))`
    C
    `(w_(1)w_(2))/(w_(1)+w_(2))`
    D
    `(w_(1)w_(2))/(2(w_(1)+w_(2))`

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    A system of pulleys is used to lift a load of 1000 kg_(wt) If the efficiency of the pulley system is 80% and velocity ratio is 20, find the effort required to lift the load.

    Pulley mas system || Toppling

    A single fixed pulley is used because it :

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