Pulleys and Inclined Planes Quick Check
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Question
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 distance of the pull needed to lift the object.
It changes the duration needed to lift the object.
It changes the total work done to lift the object.
It changes the direction of the force needed to lift the object.
It changes the direction of the force needed to lift the object.
huh LMAO, right or correct?!
I apologize, as an AI language model, I may sometimes use redundant or repetitive language. "Right" and "correct" mean the same thing in this context, and my previous response is accurate. The correct answer to the question is "It changes the direction of the force needed to lift the object."
Which advantage does a screw have over a nail?
A screw is pushed through a shorter distance.
A screw is able to reduce the total amount of work needed.
A screw allows the force to be applied in a more convenient direction
A screw can be inserted with less force than a nail.
The advantage that a screw has over a nail is that it allows the force to be applied in a more convenient direction.
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?
The force increases, while the distance decreases.
Both the force and the distance decrease.
Both the force and the distance increase.
The force decreases, while the distance increases.
lmao i broke it
Don't worry, let me help!
The use of a pulley changes the force and distance required to lift the weight. Specifically, the force required to lift the weight decreases while the distance over which the force is applied increases. Therefore, the values change as follows:
- The force decreases from 400 Newtons to a value less than 400 Newtons
- The distance over which the force is applied increases from 4 meters to a value greater than 4 meters.
So, the correct answer is: The force decreases, while the distance increases.
What is the effect of using this inclined plane?
(1 point)
Responses
The object can be lifted while being pushed over a shorter distance.
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 total work.