[问答题]
A uniform rod of mass M and length L can pivot free
ggghfv ((pc60y:a k7ily
hxh*r*pyzm g4y jj s*u8.9g .w(i.e., we ignore friction) about a hinge attached to a wall, as in Fig. 8–54. The rod is h
*. smuwh8yjx9r * h pz*4gjgy.eld horizontally and then released. At the moment of release, determine (a) the angular 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.]

