Q. A machine part is made from a uniform solid disk of radius R = 0.181 m and mass M = 8.31 kg. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the center of the disk to its outer edge). What is the moment of inertia of this machine part about the center of the disk?

Q. A ball of mass 57 g moves with a speed of 16 m/s. If its speed is measured to an accuracy of 1.02 %, what is the minimum uncertainty in its position?