[问答题]
A uniform rod of mass M and length L ca
piy gp;m;t( rx55n oo1n pivot fr
v)mu5xj ( cpx *,kcmd:qjb91 ceely (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) t
mq*xj:b ,jcdxk)cm pu cv15(9 he 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.]

