Question

why might you want to use a single fixed pulley?

Answer 1

The pulley and rope together can be used to "change direction" of forces. In this case to lift, say, a box of books with your arms can be a little bit difficult. Using a rope and a pulley you can hang from one end using your weight to do the job for you! so basically your Weight (force  

W

1

) is changed by Tension (force  

T

) in the rope to lift the Weight  

W

2

of the box!!!!

Answer 2

Answer:

The usage of a single fixed pulley would be desirable because it is an easier way to lift and transport a heavy object from one point to the other in meanings of elevation.

Explanation:

A single fixed pulley is a very smart and simple mechanism that changed the life of human beings because it allowed us to move heavy objects in elevation dimensions with easiness. It might still represent a considerable effort but is simpler than lifting it with the body, also because there were places that required to lift objects but didn't have stairs to transport them over them.