1M40.56 Spinner and Pendulum

A ball suspended as a bifilar pendulum hits a ball of equal mass free to rotate in a horizontal circle.A pool ball hangs from two suspension points, making it the bob of a bifilar pendulum. A second pool ball is fixed to the end of a long rod. The other end of the rod is clamped to a table clamp such that the ball on the rod can spin freely in a horizontal circle. The two balls are touching, so that if the pendulum bob were raised and allowed to swing through its arc, it would strike the ball on the end of the rod and send it spinning around.

Unless physical pendulum is perfectly horizontal, it will drift. To fix this, hold it in place or level it.

First two contacts recorded here.

 

Location: physical pendulum B2-3, ball on bifilar B2-4