Question

1. which diagram best represents the gravitational forces, f_g, between a satellite, s, and earth?

(1) satellite s with downward f_g, earth with downward f_g
(2) satellite s with upward f_g, earth with downward f_g
(3) satellite s with downward f_g, earth with upward f_g
(4) satellite s with upward f_g, earth with upward f_g

Explanation:

Gravitational force between two objects is an attractive interaction, meaning each object exerts a force on the other toward itself. For Earth and satellite S, Earth pulls S downward (toward Earth), and S pulls Earth upward (toward S).

Answer:

(3)