Question

part 2 of 2 for the normal force exerted on the book by the wedge in the diagram, which force(s) complete(s) the force pair for newtons third law (action - reaction)? 1. the sum of the component of gravity perpendicular to the surface of the incline and the component of f_hand perpendicular to the surface of the incline 2. the normal force exerted on the wedge by the book 3. the component of f_hand pointing perpendicular to the surface of the incline 4. the pull of the earth on the book 5. the component of gravity pointing perpendicular to the surface of the incline 6. the component of gravity pointing parallel to the surface of the incline 7. the pull of the book on the earth

Explanation:

Newton's third - law states that for every action, there is an equal and opposite reaction. The normal force exerted on the book by the wedge and the normal force exerted on the wedge by the book are an action - reaction pair. They act on two different objects (book and wedge) and are equal in magnitude and opposite in direction.

Answer:

1. the normal force exerted on the wedge by the book