Two satellites orbit Earth with the same mass, but satellite A orbits at a distance of 2 Earth radii whereas satellite B orbits at a distance of 3 Earth radii. By what factor is satellite B's gravitational force smaller than A's? (Hint: You are finding the missing number to the statement: Satellite B's force is ___ times the size of Satellite A's force.) Express your answer to two significant figures.
A person with mass 60 kg is sitting on a Ferris wheel at a distance of 10 m from the center. If the person experiences a constant force of 600 N on them as they go around, what is the period of the motion? Express your answer to three significant figures.