Question
Force and Work Unit Test
10 of 1210 of 12 Items
Question
How does a pulley make work easier when it is used to lift an object?(1 point)
Responses
It reduces the weight of the object being lifted.
It reduces the weight of the object being lifted.
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.
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 increases the amount of work produced to lift the object.
10 of 1210 of 12 Items
Question
How does a pulley make work easier when it is used to lift an object?(1 point)
Responses
It reduces the weight of the object being lifted.
It reduces the weight of the object being lifted.
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.
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 increases the amount of work produced to lift the object.
Answers
GPT-4o mini
The correct response is:
**It changes the direction of the lifting force to work with gravity.**
Pulleys are often used to make it easier to lift heavy objects by allowing the user to pull down on a rope or cable, which in turn lifts the object upward. This change in direction allows the force applied to work effectively against gravity.
**It changes the direction of the lifting force to work with gravity.**
Pulleys are often used to make it easier to lift heavy objects by allowing the user to pull down on a rope or cable, which in turn lifts the object upward. This change in direction allows the force applied to work effectively against gravity.