Physics 1: Rotational Dynamics

A uniform disk is mounted to an axle and is free to rotate without friction. A thin uniform rod is rigidly attached to the disk so that it will rotate with the disk. A block is attached to the end of the rod. Properties of the disk, rod, and block are as follows.

C. Determine the linear speed of the mass at the end of the rod for the instant the rod is in the horizontal position.