Question

The mechanical advantage of an actual pulley is less than 1. What is the justification for using the pulley then?

Answer 1

Explanation:

In an actual pulley due to friction, the mechanical advantage is less than 1 (i.e. the effort is more than the load). The reason for using the pulley when its mechanical advantage is equal to 1 or less than 1 is that the pulley allows us to apply the effort downwards i.e. in a convenient direction.

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Answer 2

Answer:

Ans:- The mechanical advantage in an actual pulley is less than 1 which means that the effort is more than the load. A pulley is used when the mechanical advantage is equal or less than 1 is that a pulley allows us to apply the effort downwards i.e in a convenient direction. To raise a load directly upwards is difficult.