Question
Force and Work Unit Test
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Question
How does a pulley make work easier when it is used to lift an object?(1 point)
Responses
It changes the direction of the lifting force to work with gravity.
It changes the direction of the lifting force to work with gravity.
It reduces the weight of the object being lifted.
It reduces the weight of the object being lifted.
It increases the amount of work produced to lift the object.
It increases the amount of work produced to lift the object.
It decreases the distance over which the force must be applied to lift the object.
It decreases the distance over which the force must be applied to lift the object.
Answers
GPT-4o mini
The correct response is:
**It changes the direction of the lifting force to work with gravity.**
A pulley allows you to lift an object by pulling down on a rope, which changes the direction of the force needed to lift the object. This makes it easier to lift heavy objects, but it does not reduce their weight, increase the work done, or decrease the distance over which the force must be applied.
**It changes the direction of the lifting force to work with gravity.**
A pulley allows you to lift an object by pulling down on a rope, which changes the direction of the force needed to lift the object. This makes it easier to lift heavy objects, but it does not reduce their weight, increase the work done, or decrease the distance over which the force must be applied.