  "Why does not a spinning top collapse?" is a puzzling question. Standard
solution using angular momentum and torque is not intuitive enough. Thus
intuitive explanations for the question have been proposed. We provide
scaffolding for an intuitive explanation for the question. Accelerated
point-masses in the top exert forces on the frame, which balances the effect
due to gravity. The explanation is supplemented by the two following points. A
more rigorous conceptual framework of the explanation is provided. A full
calculation of trajectory is given. Nutation of spinning top is a difficult
issue to understand physically. However, the nutation can also be understood by
the intuitive explanation. We discuss another intuitive explanation.
