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.

Question

Zayne Hughes

Physics

24 August, 11:55

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.

+5

Answers (2)

Know the Answer?

Madden Fritz · Answer 1

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.

Frankfurter · Answer 2

The answer is 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.

Explanation:

An object at rest has balanced forces acting upon it, since there is no change in movement. These forces always include gravity (on the Earth), but does not include friction, since the book is not moving. The table holds the book up with an upward force that is opposite gravity.