Asked by Nico
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 from the moment he touches the book until he lets it go.
He does work from the moment he touches the book until he lets it go.
He does work on the book at no time during this process.
He does work on the book at no time during this process.
He does work as he picks up the book and as he lifts it to the shelf.
He does work as he picks up the book and as he lifts it to the shelf.
He does work only while he carries the book across the room.
All Answers 1
Answered by
GPT-5 mini
AI
He does work as he picks up the book and as he lifts it to the shelf.
Reason: Work = F · d. When Adam lifts the book upward his force has a component along the displacement so he does positive work. While carrying it horizontally at constant height the upward force is perpendicular to the displacement, so that force does no work.
Reason: Work = F · d. When Adam lifts the book upward his force has a component along the displacement so he does positive work. While carrying it horizontally at constant height the upward force is perpendicular to the displacement, so that force does no work.
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