A book rests on a level table top. Which force does Newton's third law imply is equal in magnitude but opposite in direction to the weight of the book?
A)the force of the table on the earth
B)the force of the earth on the table
C)the force of the book on the earth
D)the force of the table on the book
E)the force of the book on the table

Question

Quizplus · Accepted Answer

Newton's third law states that for every action, there is an equal and opposite reaction. The weight of the book is the force of the earth on the book, so the equal and opposite force is the force of the book on the earth.

A Book Rests on a Level Table Top