Question
Adam lifts a book from the floor, carries it across the room, and places it on a high shelf. When is Adam doing work on the book?
Work = Force x Distance
(1 point)
Responses
He does work on the book at no time during this process.
He does work only while he carries the book across the room.
He does work from the moment he touches the book until he lets it go.
He does work as he picks up the book and as he lifts it to the shelf.
Work = Force x Distance
(1 point)
Responses
He does work on the book at no time during this process.
He does work only while he carries the book across the room.
He does work from the moment he touches the book until he lets it go.
He does work as he picks up the book and as he lifts it to the shelf.
Answers
GPT-4o mini
The correct response is:
**He does work as he picks up the book and as he lifts it to the shelf.**
Work is done when a force is applied to an object and that object moves in the direction of the force. When Adam lifts the book off the floor, he is applying an upward force, and the book moves upward. Similarly, when he places the book on the high shelf, he is again applying a force in the upward direction as he lifts it. However, while he is carrying the book across the room (assuming it is at a constant height), he is not doing work on the book in the vertical direction, as there is no movement in that direction.
**He does work as he picks up the book and as he lifts it to the shelf.**
Work is done when a force is applied to an object and that object moves in the direction of the force. When Adam lifts the book off the floor, he is applying an upward force, and the book moves upward. Similarly, when he places the book on the high shelf, he is again applying a force in the upward direction as he lifts it. However, while he is carrying the book across the room (assuming it is at a constant height), he is not doing work on the book in the vertical direction, as there is no movement in that direction.