[问答题]
A uniform rod of mass M and length L ca
,l (8qgrg.ynb n pivot freely (i.e., we ignore frict
cvso j mlap75sr9/9b2 ion) about a hinge attached to a wall, as in Fig. 8–54. The rod is held h
sc2ls9pma 7vo9/j5br orizontally and then released. At the moment of release, determine (a) the angular acceleration of the rod, and (b) the linear acceleration of the tip of the rod. Assume that the force of gravity acts at the center of mass of the rod, as shown. [Hint: See Fig. 8–21g.]

