How does a single movable pulley is different from a single fixed pulley
on the basis of their velocity ratio?
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in the single fixed pulley if the effort moves d distance download the the load also moves with the same distance upward
so the velocity ratio is d by d which is 1
and in the single movable pulley if the effort moves by the distance 2d the lord moves by the distance d
so the velocity ratio of single movable pulley will be 2 d by d equal to 2
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