A thin plate of mass M, length L, and width 2d is mounted vertically on a frictionless axle along the z-axis. Initially the object is at rest. It is then tapped with a hammer to provide a torque t, which produces an angular impulse H about the z-axis of magnitude H = f t dt. What is the angular speed w of the plate about the z-axis after the tap? A. H/2Md B. H/Md C. 2H/Md D. 3H/Md E. 4H/Md