[问答题]
A uniform rod of mass M and length L can pivot freely (i.e., we ignore fri
rdm( ./v8 v swp*8/c sq4yhvdfcti
po)bzyvb6h .( g 2exr5on) 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
bvr) h2p5zeo.gbx( 6yof 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.]

