[问答题]
A uniform rod of mass
rscqm* fy,e;5 M and
6,o;aqe-q+ lqm m7sbj length L can 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 ac
6m+ meb,o-;7s a lqqqjceleration 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.]
