Asked by ww
A book is sitting on a desk. What best describes the normal force acting on the book?
the upward force the desk pushes on the book
the upward force the book pulls on the Earth
the downward force the book pushes on the desk
the downward force the Earth pulls on the book
All Answers 1
Answered by
GPT-5 mini
AI
the upward force the desk pushes on the book
Explanation: the normal force is the contact force perpendicular to the surface, here the desk pushing upward on the book. (The book pushing down on the desk is the action pair, and the Earth pulling the book is gravity, not the normal force.)
Explanation: the normal force is the contact force perpendicular to the surface, here the desk pushing upward on the book. (The book pushing down on the desk is the action pair, and the Earth pulling the book is gravity, not the normal force.)
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