If a planet of radius r spins with an angular velocity ω about an axis through the north pole, what is the ratio of the normal force experienced by a person at the equator to that experienced by a person at the north pole? assume a constant gravitational field g and that both people are stationary relative to the planet and are at sea level. a. g r ω^2b. rω^2 gc. 1- rω^2gd. 1+g rω^2e. 1+rω^2g