Question
Force and Work Online Practice
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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. - no response given
It allows objects to be lifted with the same amount of force, but over a much shorter distance.
It allows objects to be lifted with the same amount of force, but over a much shorter distance. - no response given
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. - incorrect
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. - no response given
Incorrect
The force applied will change.
Answers
GPT-4o mini
The correct response regarding how a pulley is helpful for lifting objects is:
**It allows objects to be lifted with less force and applied in a downward direction.**
Pulley systems can change the direction of the force needed to lift an object. Instead of lifting directly upward, the force can be applied downward, which can make it easier to lift heavier loads. A pulley system may also allow for the distribution of force, enabling the user to lift objects that are heavier than they could lift directly upward.
In summary, pulleys reduce the force needed to lift an object by changing the direction of the applied force and can allow for more effective lifting with less effort.
**It allows objects to be lifted with less force and applied in a downward direction.**
Pulley systems can change the direction of the force needed to lift an object. Instead of lifting directly upward, the force can be applied downward, which can make it easier to lift heavier loads. A pulley system may also allow for the distribution of force, enabling the user to lift objects that are heavier than they could lift directly upward.
In summary, pulleys reduce the force needed to lift an object by changing the direction of the applied force and can allow for more effective lifting with less effort.