* Gravity: The book experiences a downward force due to gravity, which is equal to its weight of 10 Newtons.

* Normal Force: The table exerts an upward force on the book, called the normal force. This force is equal and opposite to the force of gravity, preventing the book from falling through the table.

Since the forces are equal and opposite, they cancel each other out, resulting in a net force of zero. This is why the book remains at rest.