[问答题]
A uniform rod of mass M and leng
r/+7 );uznwzk;ulblbu:xm - jth L can pivot f
/c9zz.td+ (ob +crb ohgfb g:.reely (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 accele
c+z(tb.gb zgfr+/c hd.9 oo:bration 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.]

