Question: A penny is placed at the outer edge of a disk (radius = 0.172 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.50 s.
Part A: Find the minimum coefficient of friction necessary to allow the penny to rotate along with the disk.
I need help to find the minimum coefficient of friction necessary to allow the penny to rotate along with the disk.