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
a
He does work as he picks up the book and as he lifts it to the shelf.
b
He does work from the moment he touches the book until he lets it go.
c
He does work on the book at no time during this process.
d
He does work only while he carries the book across the room.
Work = Force x Distance
a
He does work as he picks up the book and as he lifts it to the shelf.
b
He does work from the moment he touches the book until he lets it go.
c
He does work on the book at no time during this process.
d
He does work only while he carries the book across the room.
Answers
GPT-4o mini
The correct option is:
**a**: He does work as he picks up the book and as he lifts it to the shelf.
Explanation: In physics, work is done when a force is applied to an object, causing it to move a distance in the direction of the force. Adam is doing work when he lifts the book off the floor (applying an upward force) and when he raises it to place it on the shelf (also applying an upward force). While he is carrying the book across the room, he is not doing work on the book in the vertical direction, but he is still applying force to hold it. However, the significant work done on the book occurs during the lifting stages.
**a**: He does work as he picks up the book and as he lifts it to the shelf.
Explanation: In physics, work is done when a force is applied to an object, causing it to move a distance in the direction of the force. Adam is doing work when he lifts the book off the floor (applying an upward force) and when he raises it to place it on the shelf (also applying an upward force). While he is carrying the book across the room, he is not doing work on the book in the vertical direction, but he is still applying force to hold it. However, the significant work done on the book occurs during the lifting stages.