Question

Use the image of the pulley to answer the question.

A photo shows a hook attached to ropes used to lift things.

How is this pulley helpful for lifting objects?

(1 point)
Responses

It allows objects to be lifted with less total energy and over a much shorter distance.
It allows objects to be lifted with less total energy and over a much shorter distance.

It allows objects to be lifted with less force and applied in a downward direction.
It allows objects to be lifted with less force and applied in a downward direction.

It allows objects to be lifted with the same amount of force, but applied in a downward direction.
It allows objects to be lifted with the same amount of force, but applied in a downward direction.

It allows objects to be lifted with the same amount of force, but over a much shorter distance.

Answer 1

It allows objects to be lifted with less force and applied in a downward direction.

Explanation: the movable pulley shown gives a mechanical advantage (you pull with less force), but you must pull more rope length — work (energy) is conserved.