Concept:Artificial gravity utilizes inertia. The spaceship spins, meaning everything inside wants to fly off in a straight straight line. The outer hull of the ship gets in the way, pushing inward on the astronauts.
Solution:- The normal force exerted by the rigid floor/wall of the spaceship acts universally inward, serving as the required centripetal force.
- It physically pulls/pushes objects strictly towards the center of rotation to maintain their circular path.
- (Note: The astronauts' inertia pushing outward against the floor is the reactive centrifugal effect they feel as "gravity", but the centripetal force itself points inward).
Why other options are incorrect:- Option D describes the apparent centrifugal pseudo-force experienced in the rotating frame, not the centripetal force.
- Option B violates conservation of angular momentum.
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