Question

learning goal: to understand newtons third law. as shown, a book weighing 5 n lies on a table.(figure 1) figure 1 of 1 problem 1 a downward force with a magnitude 5 n is exerted on the book by the force of __. o inertia o gravity o the table part b an upward force with magnitude is exerted on the __ by the table. o 5 n / book

Explanation:

Step1: Analyze the forces acting on the book

The book is at rest on the table. According to Newton's first law (law of inertia), if an object is at rest, the net force acting on it is zero. The force of gravity \(F_g = 5N\) acts downward on the book.

Step2: Apply Newton's third law

Newton's third law states that for every action, there is an equal and opposite reaction. The table exerts a normal force \(F_N\) on the book. Since the book is in equilibrium (\(F_{net}=0\)), \(F_N - F_g=0\). Substituting \(F_g = 5N\), we get \(F_N=5N\) (upward).

Answer:

5N