A book is sitting on a table at rest. Which of the following best describes the forces acting on the book?
A.
The forces on the book are unbalanced because the gravity pushing up on the book is not equal to the friction from the table pushing the book to the right.
B.
The forces on the book are unbalanced because the gravity pushing down on the book is not equal to the force of the table pushing up on the book.
C.
The forces on the book are balanced forces because the gravity pushing up on the book is equal to the friction from the table pushing the book to the right.
D.
The forces on the book are balanced because the gravity pulling down on the book is equal to the upward force applied by the table.
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