Why sphere ball may not fall vertically if its spinning?

A spinning sphere ball may not fall vertically due to the gyroscopic effect, which stabilizes its orientation and can cause it to precess instead of dropping straight down. The gyroscopic forces generated by the spin create angular momentum that resists changes to its axis of rotation, allowing the ball to maintain its tilt. Additionally, if the ball is spinning rapidly, the centrifugal force can create a slight lifting effect, further influencing its descent. As a result, the ball may follow a more complex trajectory rather than falling directly downward.