[问答题]
A uniform rod of mass M and length L can pivot freely
zc fyfj3iovjw4 u4pej ,)7qovch:.9 9 (i.e., we ignore fr
t 1 3p+5paeqpaiction) 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 ang
p3 eqap 15ap+tular 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.]

