[问答题]
A uniform rod of mass
5x ggq. (b)wymafwl z.g*j;3n M and length L can
vvxc-t z./:ir pivot freely (i.e., we ignore friction) about a hinge attached to a wall, as in Fig. 8–54. The rod is held horizontally 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
ivrzx v/:.- tc mass of the rod, as shown. [Hint: See Fig. 8–21g.]

