Question
Force and Work Online Practice
Complete this assessment to review what you’ve learned. It will not count toward your grade.
6 of 126 of 12 Items
Question
A construction worker uses a pulley system to lift a block. What is one of the purposes of the pulley system?(1 point)
Responses
to increase the energy needed to move the block
to increase the energy needed to move the block - no response given
to change the direction of the force needed to move the block
to change the direction of the force needed to move the block - no response given
to reduce the time needed to move the block
to reduce the time needed to move the block - no response given
to increase the force needed to move the block
to increase the force needed to move the block - incorrect
Incorrect
The force would be reduced by using the pulley system.
Complete this assessment to review what you’ve learned. It will not count toward your grade.
6 of 126 of 12 Items
Question
A construction worker uses a pulley system to lift a block. What is one of the purposes of the pulley system?(1 point)
Responses
to increase the energy needed to move the block
to increase the energy needed to move the block - no response given
to change the direction of the force needed to move the block
to change the direction of the force needed to move the block - no response given
to reduce the time needed to move the block
to reduce the time needed to move the block - no response given
to increase the force needed to move the block
to increase the force needed to move the block - incorrect
Incorrect
The force would be reduced by using the pulley system.
Answers
GPT-4o mini
The correct response is **to change the direction of the force needed to move the block**.
A pulley system allows the construction worker to lift the block by pulling down, which changes the direction of the force applied and makes it easier to lift heavy objects. It does not increase the energy needed; instead, it can reduce the effort required by changing the direction of the applied force.
A pulley system allows the construction worker to lift the block by pulling down, which changes the direction of the force applied and makes it easier to lift heavy objects. It does not increase the energy needed; instead, it can reduce the effort required by changing the direction of the applied force.