Question

how does it differ from a single fixed pulley?​

Answer 1

Answer:

A single fixed pulley does not produce any mechanical advantage , it only changes the direction of the force . A movable single pulley attaches to an object you are trying to move . A single movable pulley does produce a mechanical advantage of 1 to 2 .

Explanation:

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Answer 2

Answer:

A single fixed pulley is attached to a stationary object (or an object that you assumed would stay stationary ) , like an overhead beam , or the side of a tree . A single fixed pulley does not produce any mechanical advantage , it only changes the direction of the force . A movable single pulley attaches to an object you are trying to move . A single movable pulley does produce a mechanical advantage of 1 to 2 . It doubles the force you apply to a rope , but it does change the direction of force except on the stationary end of the rope that is tied off .