gc textbook chapter 8 Rotational Motion (id: d16c1a995)

[问答题]
A uniform rod of mass M and lelu4odqs28* 5;hd euv+7s zgtkngth L can pivot freely (iu ug,- l5 gc8b.u*yc ydop2c8i.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 acceleration of theg pu u82.c8g5c ,*iyo-y dulcb 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.]

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