A thin rod (length = 1.49 meter) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be neglected, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and rotates downward.
(a) Find what is the angular speed of the rod just before it strikes the floor?
(b) Find the magnitude of the angular acceleration of the rod just before it strikes the floor?