A book of weight 20 N rests on a horizontal table and remains at rest
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
A book of weight 20 N rests on a horizontal table and remains at rest. Which one of the following statements about the forces on the book is correct?
(a) The table exerts an upward force greater than 20N to keep the book at rest.
(b) The table exerts a downward force of 20N on the book (action equals reaction).
(c) The table exerts an upward force of 20N on the book.
(d) Because the net force is zero, no forces actually act on the book.