This is an accessory for the Rotating Platform (ME-8951) and includes a disk and a ring to support several experiments in rotational inertia.
The disk may be rotated about several axes. When used in conjunction with the adapter provided, experiments using the parallel-axis theorem may be performed by moving the disk off from the center of rotation. The ball bearing on one side of the disk permits it to rotate freely for some experiments while a "D" hole on the other side prevents rotation about the disk axis.
This Rotational Inertia Accessory is included in PASCO's Complete Rotational System (ME-8950A).