Pulley

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  1. There are 2 types of pulley, the fixed pulley and the movable pulley.

(“Fixed pulley” by César Rincón available under a Creative Commons Attribution-Share Alike 3.0 Unported)
(“Movable pulley” by Johjak available under a Creative Commons Attribution-Share Alike 3.0 Unported)
  1. In SPM, we will only discuss the fixed pulley.
  2. The fixed pulley change the direction, without changing the magnitude of the force.
  3. In SPM, we assume all pulleys are smooth (no friction) unless it is stated otherwise.

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