Respuesta :

jamesnaquan132

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!!!!

DanielCastro

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.

Otras preguntas