## Oblique Collisions and the Spin of a Batted Ball

High-speed video clips of oblique ball-bat collisons.

These videos demonstrate the relationship between the initial spin, the bounce angle, and the final spin. A detailed analysis of the data shows that the outgoing spin is nearly independent of the initial spin for a given bounce angle (for a given initial speed). These videos were part of an experiment to study the spin of a batted ball. You can read the resulting publication **here ** or look at slides of a presentation by clicking **here**.

The ball initially has zero spin. It hits above the center of the bat, then rebounds moving upwards with backspin.

The ball initially has backspin. It hits above the center of the bat, then rebounds moving upwards with backspin, reversing the initial spin.

The ball initially has backspin. It hits above the center of the bat, then rebounds moving upwards with backspin, reversing the initial spin.

The ball initially has backspin. It hits above the center of the bat, then rebounds moving upwards with backspin, reversing the initial spin.

The ball initially has topspin. It hits above the center of the bat, then rebounds moving upwards with backspin, without reversing the initial spin.

The ball initially has topspin. It hits below the center of the bat, then rebounds moving downwards with topspin, reversing the initial spin.