Use the picture to answer the question.
An illustration shows a man lifting a box using a pulley.
What is accomplished by this simple pulley?
(1 point)
Responses
It changes the direction of the force needed to lift the object.
It changes the direction of the force needed to lift the object.
It changes the total work done to lift the object.
It changes the total work done to lift the object.
It changes the distance of the pull needed to lift the object.
It changes the distance of the pull needed to lift the object.
It changes the duration needed to lift the object.
It changes the duration needed to lift the object.
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It changes the direction of the force needed to lift the object.
Question
Which advantage does a screw have over a nail? (1 point)
Responses
A screw is pushed through a shorter distance.
A screw is pushed through a shorter distance.
A screw allows the force to be applied in a more convenient direction.
A screw allows the force to be applied in a more convenient direction.
A screw is able to reduce the total amount of work needed.
A screw is able to reduce the total amount of work needed.
A screw can be inserted with less force than a nail.
A screw allows the force to be applied in a more convenient direction.
Use the image of the pulley to answer the question.
An illustration shows a system of two pulleys lifting a block.
Lifting the weight without a pulley requires a force of 400 newtons over a distance of 4 meters. How do these values change when the pulley is applied?
(1 point)
Responses
Both the force and the distance increase.
Both the force and the distance increase.
Both the force and the distance decrease.
Both the force and the distance decrease.
The force increases, while the distance decreases.
The force increases, while the distance decreases.
The force decreases, while the distance increases.
The force decreases, while the distance increases.
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Both the force and the distance decrease.
Use the image to answer the question.
An illustration shows a man rolling a drum upwards on an inclined surface.
What is the effect of using this inclined plane?
(1 point)
Responses
The object can be lifted with less total work.
The object can be lifted with less total work.
The object can be lifted while using a downward force.
The object can be lifted while using a downward force.
The object can be lifted with less force.
The object can be lifted with less force.
The object can be lifted while being pushed over a shorter distance.
The object can be lifted while being pushed over a shorter distance.
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