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In first system of pulley, the Velocity ratio is equal to (where n : no. of pulleys)

In first system of pulley, the Velocity ratio is equal to (where n : no. of pulleys) Correct Answer 2<sup>n</sup>

Explanation:

Pulleys

  • A systematic arrangement of one or more pulleys may provide a simple and convenient lifting machine.
  • Its function just performs the change in the direction of the applied force.
  • Depending on the arrangement, pulleys are classified as:
    1. First order pulley system
    2. Second order pulleys system
    3. Third order pulley system.

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  • It is to be noted that in the system considered, there are three movable pulleys and the velocity ratio is 23.
  • If there are only two movable pulleys, then velocity ratio would be 4 (i.e. 22).
  • In general, in the first order pulley system, velocity ratio (VR) is given by 2n, where, n is the number of movable pulleys present in the system. 

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