single pulley is used as speed multiplier or force multiplier or it can change the direction of effort applied to convenient direction or none of these
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(a) In a single fixed pulley, the velocity ratio is always more than the mechanical advantage. (b) The efficiency of a movable pulley is always less than 100%.
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Chapter 3 - Machines Exercise Ex. 3B.
Single fixed pulley Single movable pulley
5.It is used to change the direction of effort 5.It is used as force multiplier.
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