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Help from the physics guys please?

Discussion in 'Off Topic [BG]' started by WickedPissah, Mar 23, 2009.


  1. WickedPissah

    WickedPissah

    Jan 22, 2008
    Boston
    How would one go about finding the mechanical advantage of a pulley system?
     
  2. ehque

    ehque

    Jan 8, 2006
    Singapore
    Number of ropes supporting the weight.

    If you resolve all the forces and the tension, you will see that the upward force that you are exerting on the mass you are lifting equals to the total tension in all the ropes lifting it. Tension in all the ropes are equal, and are also equal to your pulling force. Therefore the number of ropes "lifting" the mass = the mechanical advantage. 2 ropes, 2 times advantage, 5 ropes, 5 times advantage.
     
  3. WickedPissah

    WickedPissah

    Jan 22, 2008
    Boston
    Thanks!
     
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